Showing posts with label El Capitan. Show all posts
Showing posts with label El Capitan. Show all posts

Friday, March 25, 2022

A Tale of Two Pullouts: Yosemite Valley From a Different Angle

El Capitan and the Merced River from the east

I know that I am truly privileged living as I do only a two-hour drive from one of the most sublime places on Earth, Yosemite Valley and the Sierra Nevada. We head up there two or three times a year, sometimes with students in tow, and sometimes on our own, so in 30+ years we've been there at least 100 times.

And I never get tired of it.

Part of the allure is seeing the seasonal changes. Winter provides the coating of snow, while fall provides the changing colors of foliage. Spring offers surging waterfalls and wild river flows. Summer provides...well...crowds, but also nice moments in places we learn of where the crowds can be avoided. We have favorite meadows and lakes for instance where people rarely stop. No matter when or where we visit, there always seems to be something new or different.

The Cathedral Spires are tucked away on the east side of the Cathedral Rocks at Bridalveil Falls
I know how it is if one gets to see Yosemite Valley for the first, and maybe only time. I've had that experience at so many other places around the world. The time available may be very limited, one may be part of a tightly controlled tour, and no one wants to miss any of the most famous views or hikes. And so it is that there is the required stop at Tunnel View, Bridalveil Falls, Cook's Meadow for the view of Yosemite Falls, and maybe Ahwahnee Meadow for a view of Half Dome. The walk to Lower Yosemite Falls, or Nevada Falls. And the Visitor Center. It makes for a full day, and a fulfilling day too. One of the most spectacular days you might ever experience.

And I never get tired of it. I'm perfectly happy to hit those same spots on my 101st trip to the valley. The season, the time of day, and the weather all conspire to make each stop a unique experience of wonder. But sometimes there are changes of a different nature, and that makes some trips really memorable. That is what today's collection of views is about.
Sentinel Rock rises above the south side of Yosemite Valley across from Yosemite Falls
Since the time that Yosemite Valley became a park, suppression of all forest fires has been the official policy. It was not however the natural condition of the parkland, nor was it the normal condition of the valley floor over the last few thousand years when it was managed by the original inhabitants of the region. 

The Ahwahnechee people, with roots among the Miwok and Paiute peoples of both sides of the Sierra, depended in large part on the acorns of the Black Oak and grazing animals like deer or bighorn in Yosemite Valley. It was in their best interest over the centuries to allow fires to burn through the valley floor and hold the quick-growing conifers at bay. When the park administrators put an end to the fires, the pine and cedar trees choked out meadows (only 65 acres of the original 750 acres of meadows remain) and grew into impenetrable thickets, blocking views of the canyon walls above.

What's worse is that choking off small fires can cause a buildup of fuel in the forest that could only lead to much worse fires than usual. This was always a danger, but it is far more hazardous today in a time of warming climate and extended droughts. Every Californian is fully aware of how wildfires in the state have morphed into monstrous events without parallel in written history.

The National Park Service has come around in their fire philosophy, especially after extensive fires a few decades ago in Yellowstone and Mesa Verde National Parks. They have instituted new policies of prescribed fires and selective tree removal to make the parks safer, but also to enhance the experiences of park visitors. In what way? The views.
The distinctive profile of the Three Brothers is the result of parallel jointing, or fractures in the granite that occur as the rocks are exposed by erosion
There are the parking lots that attract the majority of park visitors, but on the roads that loop around the valley there are many small pullouts, enough for perhaps three or four cars. In years past there seemed no real purpose for them, as they were surrounded by thick forest and offered no views or trailheads. On our visit a week ago, I found that two of those previously uninteresting pullouts had had the forest thinned out, and that they now possessed some outrageously spectacular views! The familiar iconic cliffs were there, but from angles I had never really seen before. In particular there was the long vertical cliff extending east from El Capitan, a view of the rarely seen Cathedral Spires (as opposed to the Cathedral Rocks at Bridalveil Falls), the vertical pillar of Sentinel Rock (often missed by people staring at Yosemite Falls), and the Three Brothers, which have never really had a designated viewpoint and are usually hidden by the tall trees. Upper Yosemite Fall was visible as well, perhaps farther away, but how many of you Yosemite veterans can recall seeing the falls with not a single other person in sight?
Yosemite Falls from a pullout west of Swinging Bridge
We had a leisurely lunch at the pullouts and wandered about taking pictures, and only two or three cars pulled off the road, and no one else actually got out. Except for the noise of passing traffic on a crowded Sunday afternoon, we literally had the best of Yosemite Valley to ourselves.
Prescribed fire in Yosemite Valley, with Half Dome and Clouds Rest in the distance.
We stayed at the park through Monday morning, and when we stopped by Tunnel View we witnessed another chapter in the new fire/forest regime: the ignition of a prescribed fire. It was done in March because the ground was still damp enough to prevent the uncontrolled spread of the fire. If you are on Facebook and would like to know more about forest management in Yosemite, check out (1) Yosemite Fire and Aviation | Facebook.


Wednesday, August 4, 2021

A Different Kind of "Other": Yosemite of the Pandemic

Half Dome from Sentinel Bridge
I've spent a fair amount of time writing about "The Other California", the spectacular places we have in our state that don't tend to show up on postcards. But sometimes there are decent reasons to visit the places that are on the postcards. This is especially true with Yosemite Valley and Yosemite National Park. There are few places on Earth as spectacular as the granite cliffs and towering waterfalls. But summer isn't that time. It's hot and dusty, the waterfalls are dry or nearly so, and the crowds and traffic are...simply awful. It's my least favorite time of year.

But sometimes events conspire. A pandemic continues to rage across the country in large part because a significant proportion of the population refuses to mask up or get a vaccination. As a result, the National Park Service instituted a reservation system at Yosemite National Park, limiting the number of daily visitors. And despite the desperately dry conditions caused by the intense drought, there were a number of monsoon-related thunderstorms in the High Sierra in the last few weeks. Mrs. Geotripper and I decided to give the valley a chance, so I carefully watched the reservation site (recreation.gov) and caught a cancellation. We headed up the hill on Monday. 

The view from Swinging Bridge of Yosemite Falls
It was a different world in Yosemite Valley. Two years ago we paid a visit on Labor Day weekend (our out-of-town visitors couldn't come any other time), and it was absolute mayhem. There was an hour-long wait at the entrance station, and a two-hour long traffic jam that resulted in a single parking spot for the day with no chance for exploration (the trams were stuck in traffic too). But Monday there was no waiting to get into the park, and there were parking spots available everywhere, even the ones usually most impacted, like Swinging Bridge, and Sentinel Bridge. The weather was warm, verging on hot, but the ground was moist, the meadows still green, and Yosemite Falls was flowing. It was the kind of day that every visitor to this beautiful place deserves, and it was the kind of day that had become exceedingly rare in recent years.

There is usually a gaggle of photographers standing on Sentinel Bridge (the top picture) because of the artful possibilities of catching the reflection of Half Dome on the Merced River. We had the bridge to ourselves. Swinging Bridge (which for the record does not swing) was crowded as always, but even there the bridge was empty for a few moments and I was able to score a shot of Yosemite Falls without the aforementioned crowds in the picture.

There are lesser-known viewpoints like the one above of the Cathedral Rocks and Cathedral Spires, and on most days the three parking spots are taken. But once again we had the pullout to ourselves, and got a wonderful view of these cliffs that would qualify for national park status in any other place, but which barely catch the attention of travelers on their way out of the valley.

Another crowded spot on a normal day is Valley View at the west end of the valley. The small parking lot is usually packed, but once again there were spots available. El Capitan (left) and the Cathedral Rocks and the wispy, nearly invisible Bridalveil Falls (right) reflected on a slow-moving stretch of the Merced River.

I was going to write about the need to come to Yosemite on a weekday if at all possible, but it occurs to me that a better discussion is whether to implement a reservation system permanently. The concessionaires and surrounding communities of course depend on as many visitors as possible to thrive and maintain their profit margins. But the quality of the experience of visitors is radically diminished when they spend most of their time waiting in lines and being jostled by crowds on the trams and the trails. People expect that sort of thing at an amusement park, but that's not what our national parks were meant to be. Consider the mission of the parks: to preserve unimpaired the natural and cultural resources and values of the National Park System for the enjoyment, education, and inspiration of this and future generations. That simply doesn't happen in our most popular parks like Yosemite, Zion, Arches, and others that are bursting at the seams with tourists.

Our park system has not expanded with our population, and the budget of the park service is cut seemingly every year. The last administration actually cut the size of a number of precious parks. We need to expand the opportunities of people to experience the parks in the best way possible. 

Monday, May 17, 2021

Yosemite Valley This Week: A Moment of Spring Richness and an Uncertain Future

 

I admit it. I fear what lies ahead. That's not the usual opening statement in a photo-essay of Yosemite Valley at its best moments. But that's the problem. I was there last week, when the heaviest snowmelt should have been weeks in the future. And the valley was at its best, a lovely escape from the summer-like heat of the Great Valley downstream.
But the peak runoff is not weeks in the future. It is probably already past. This year's snowpack was an unmitigated disaster. The few storms that did come dropped a bit of snow, enough in some years to get by, but very warm and dry conditions during April dropped the snowpack to around 5-10% of normal, or what passes for normal in these uncertain times. The snowpack would usually keep the famous waterfalls busy until mid-June or even July, but many of them may be dry within a few short weeks. And then the fires will come. I don't know what lies ahead for this most beautiful of valleys, but a disastrous fire has to be considered as a possibility.
The natural condition of the floor of Yosemite Valley has always been controlled by wildfire. Lightning strikes have caused fires for thousands of years, leaving the valley floor as a patchwork of open meadows with a few mature oaks and ponderosa capable of surviving the occasional grass fires. When humans first discovered the valley thousands of years ago, they continued the practice of burning the valley floor every few years. They had their motives of course; the acorns of the fire-resistant Black Oaks provided much of their diet, and the hunting of game was easier when the prey was in an open meadow rather than a deep forest.
When the valley was "saved" by turning it first into a state park in 1864 and later into a national park in 1890, fire suppression became the governing philosophy. The park's original 745 acres of meadows were invaded by young saplings and the 65 acres of meadows today represents only 7% or so of their original extent. It didn't help that drainage outlet of one of the wetland areas was dynamited to keep down the mosquito population.
Much of the valley floor has become a thicket of young and unhealthy conifer trees, a fire hazard of the highest order. The park service has come around to accept the need for fires in the management of the valley, but their success has been spotty and controversial. Prescribed fires have been done in some areas of the park, but more than one has gotten out of control and damaged structures. And prescribed fires are done when soil and fuel conditions are on the wet side. That is not the case at Yosemite this year.

An alternate practice was begun around a decade ago, and it too has been controversial. Instead of burning, the park service has been allowing tree-cutting to be done in some areas to remove the unhealthy trees. The buzz of chainsaws does not seem compatible with the general notion of "preserving" natural lands, but it may be a necessary evil. It led to an unexpected change for me as we visited the park last week.

Everyone always seems to be in a hurry as they scurry through the park looking for parking spots. The traffic was a problem because the free park shuttles weren't running due to the pandemic. So to see the many features of the valley, one had to park and hike quite some distance, or else drive from parking lot to parking lot looking for a good view. I was letting traffic pass by pulling into roadsides that normally don't offer much in the ways of views. But this time was different.
A lot of trees had been cleared from a pullout that I knew had never had much of a view before. No one else was there, but as I got out I could see something was different. The rocks above were, well, unexpected. I've struggled at times to get an interesting angle on the Cathedral Spires (above), but they were easily visible. And as I turned, I realized the Three Brothers were also in the open (below). 
And as I turned yet again, I had a full-on view of El Capitan that showed the full expanse of the cliff from the "Nose" to Horsetail Falls. The sawn-down trees in the foreground were perhaps a sad mess (that will be cured in time by natural forces of decay), but the view of the cliffs was dramatic and quite unexpected. We sat in the pull-out and enjoyed a quiet lunch.
The Pacific Dogwoods were in full bloom. The trees are a somewhat nondescript part of the understory for much of the year, but during the spring the flowers are dramatic (and for the biologists among you, I know that the big white petals are actually modified leaves or bracts, and that the true flowers are in the "button" in the middle). 
Our journey through the valley was our first in nearly a year. It included a stop at one of the most congested spots, but as is always true, there was a reason for its popularity. The Tunnel View is close to the spot where European colonizers first viewed the valley in 1851. The party, a militia trying to chase down a group of Ahwahnechee people, was largely unimpressed with the valley. But their medic, Lafayette Bunnell, was deeply moved by the sight, and later interviewed Chief Tenaya and others to learn what he could of the valley. He is credited with the names of many of the features, including the name of the valley itself. Yosemite seems to have been a derivative of the Miwok name for Grizzly Bear. Their actual name for the valley was "Ah-wah-nee".
So a hot and dry summer season looms. I hope for the best.

Saturday, January 30, 2021

You Can See Yosemite Valley from the Tuolumne River! In a Manner of Speaking...

Those of you who know the layout of Yosemite National Park will also know that the title of today's post must come with some kind of caveat because any hiker or cartographer knows that the Tuolumne River in Yosemite National Park flows through a vast gorge the depth of the Grand Canyon (it's even called the Grand Canyon of the Tuolumne River). You just can't see the one valley from the other.

But...the Tuolumne River also flows across the flat plains of the Great Valley of California, and if we count "Yosemite Valley" as being also some of the significant peaks and cliffs that ring Yosemite Valley like Half Dome, El Capitan, and Sentinel Dome, you can in fact see the valley from the Tuolumne River.

This is not one of my occasional posts about the better-known spot for viewing Half Dome from Hall and Keyes Roads near Turlock. I get in enough internet trouble over that one, but it is indeed possible to see the very top of Half Dome and El Capitan from my daily walking trail along the Tuolumne River in Waterford. But the additional caveat is that it has to be a really clear day, and we have precious few of those over the course of year. Sometimes weeks can pass between sightings of any mountains at all. But following our huge storm this week, the air was crystal clear today.

The additional caveat is that you need binoculars or a good zoom lens to see the domes and cliffs. With the naked eye, the mountains are difficult to distinguish from one another. But on those rare clear days, and with the right equipment, and knowing where to look, you can indeed see some of Yosemite Valley's most famous landmarks. In a way of course it is frustrating. I'd rather be there than here, but chances will start increasing as the pandemic finally begins to subside.

If you are wondering about the cranes in the foreground, our 1964 vintage bridge is being replaced by a safer, wider bridge. The anchoring columns of the present bridge are unstable during floods; all bridges are perfectly safe, the engineers say, right up until they are not.

In any case, if you couldn't make out the various domes and cliffs and peaks in the opening picture, they are labeled below. 

If you live in the Central Valley (we call it the Great Valley) and wonder if you can see any particular Sierra peaks, check out caltopo.com and find the dropdown command for "simulated view". You can adjust the map for a view from anywhere covered by the program. Below is an example of the view I used to label the peaks shown in this post.




Sunday, December 8, 2019

The Day I Found I Could See Half Dome and El Capitan From Near My House And Why it Was So Hard To Do So

Can you pick out Half Dome in the picture above? It's not easy...
Anyone who follows my other blog (Geotripper's California Birds) knows that I walk the Tuolumne Parkway Trail just about every time I have a free morning, watching for birds and getting exercise. Unfortunately, given the air quality of the Great Valley where I live, I cannot see the source of the Tuolumne River, even though the mountain crest is only 40 miles or so away. But once in awhile a storm blows through, and I am reminded again that I live next to one of the world's great mountain ranges. That happened this week as our first major storms of the season passed through, dropping more than three inches of rain locally, and several feet of snow on the very dry mountains above. The Tuolumne Parkway Trail climbs to the top of the bluff above the river to pass around the water treatment plant, and provides a nice view of the Sierra Nevada crest. I was impressed enough to snap some pictures. 

Later on, while looking at the pictures, I saw what looked like a familiar ridge-top. I consulted with Cal Topo, and by golly, I was right. I had captured a picture of Half Dome, and El Capitan right in front of it! It's not an obvious view, and you would need binoculars or a telescope to see it (or the zoom on my camera), but it's there. I had never noticed it before from this vantage point because both rocks get swallowed up in the rocky ridges behind (the peaks behind Half Dome are half a mile higher in elevation). The snow from two days earlier helped to highlight the summits of both Half Dome and El Capitan. The view of Half Dome from the valley floor is more obvious from other angles, even though the concept that it can be seen at all has been contentious at times...

Can you see it in the picture above? It's a challenge. Give it a shot and then consult the CalTopo wireframe below to see the identity of the peaks in the picture...

Zooming in and centering the two rocks makes them just a small bit more obvious, but it is still hard to see, given that we are only seeing the topmost parts of both Half Dome and El Capitan

Zooming in even more, the summit of Half Dome is even more obvious.

I've annotated the photo to help out a little...
They are from much closer and from a different angle, but the webcams in Yosemite Valley provide an idea on the snow pattern on Half Dome on the day I saw it from the Central Valley.

If you have a small bit of a wild place somewhere near where you live, visit as often as you can. You never know when a new discovery or surprise will be waiting. This week alone, I saw a beautiful Gray Fox in the wild corner of my campus, and a wildly out of place bird a few feet from where I took the pictures of Half Dome.

Saturday, April 13, 2019

The Way it Was Today: Spring is About to Burst Forth in Yosemite Valley

In certain ways, I am the luckiest of people. I live in a place, however humble, that is a mere two-hour drive from Yosemite Valley in Yosemite National Park. I can visit and explore the park almost any time I want to, and I do so as often as I can. This is a privilege that I could never take for granted. It's just to precious to me.
A related form of luckiness is that I am a teacher, a professor of geology. That means that I have also been granted the wonderful privilege of introducing Yosemite to my students, a great many of whom have never visited the park despite their proximity. That's what I got to do today, teaching a field course on the geology of Yosemite National Park. Among the students on the trip, there were half a dozen who had never ever laid eyes on the park. The sparkling clear spring day did not disappoint.

We started our exploration of the valley with the glorious panorama from Tunnel View (top photo). We could see El Capitan, Half Dome, Sentinel Rock, the Cathedral Rocks, and Bridalveil Falls. It is hard to imagine another place in the world with such imposing cliffs and towers in such a small confined valley. We talked about the discovery of the valley by people, both thousands of years ago, and in the last 170 years by the usurpers and colonizers of this incredible landscape.

We then drove to the parking area on the valley floor where we could look at El Capitan in one direction, and Cathedral Rocks and Bridalveil Falls in the other. We were able to talk about hanging valleys in the presence of one of the greatest examples in the world. We also talked about how Yosemite Falls the 5th or 7th highest in the world, and yet is not even the tallest waterfall in Yosemite Valley.
Ribbon Falls at Yosemite Valley
Yosemite Falls is certainly a spectacular sight, but to purists of such things, it is actually three waterfalls, an upper fall with a height of 1,425 feet, a middle cascades section with a drop of more than 700 feet, and a lower drop of 320 feet. There is another waterfall in Yosemite that is 200 feet higher than upper Yosemite Falls. It's called Ribbon Fall and it falls over the cliff to the west of El Capitan. It is not as well-known as Yosemite Falls because it is usually dry by the early summer when most tourists come to visit.
Just the same, Yosemite Falls is a true treasure, leaping from a sheer cliff and impacting on the rocks below. It's the 'accidental' waterfall of Yosemite Valley. Yosemite Creek once flowed down the steep channel to the left of the present-day falls, but the course of the creek was reconfigured by the movement of glaciers across the mouth of the older creek, forcing the river to find a new path over the brink of the cliff.
The vantage point offered a peek-a-boo of Half Dome. This iconic monolith towers nearly 5,000 over the valley floor. It is the product of several processes acting in concert. The first is unloading, the release of pressure by being brought to the surface of the earth. The rock expands just a bit, but then fractures. Vertical fractures are called joints, and jointing is the explanation for the steep face of the dome.
The second form of fracturing is called exfoliation, a process by which the rocks split into slabs that are parallel to the surface of the rock. This has the effect of removing corners and edges, leading to the shaping of the dome..

That is the gist of our day, but more than anything else, I wanted to share the images of the day with all those who can't easily get there. It was a stunning day in the falley.

Monday, November 19, 2018

The Way It Was: The Deep Grassy Valley of the Ahwahnee


No geology exposition in today's post. Our state is choking in a toxic inversion layer filled with ash and particulate soot that is a sad reminder of the lives lost and lives destroyed by a horrific wildfire in the North State. Just for today, a reminder that beauty surrounds us in the depths of tragedy and suffering.
Half Dome reflected in the waters of the Merced River at Sentinel Bridge
Ahwahnee was the Native American name for Yosemite Valley. It's meaning is muddled in time, but it probably means the "Big Mouth", or the "Deep Grassy Valley". It was an island of clear skies and clean air above the smoke and ash. We only had a few hours to visit, so we headed to Sentinel Bridge for a short stroll, and as the sun set in the west we made for the Gateway View at the west end of the valley.
Sentinel Rock from Sentinel Bridge
Sentinel Rock is an astounding vertical cliff that rises nearly 3,000 feet above the valley floor. It receives somewhat less attention than some other rocks and cliffs in Yosemite Valley because it rises behind people who are staring in awe at Yosemite Falls on the north side of the valley.
Yosemite Point and the dry Yosemite Falls
Speaking of Yosemite Falls, there wasn't much to see of them. There was the barest trickle of water that did no more than wet part of the cliff. That should change this week as the first winter storm of year arrives (weeks late). We need it desperately, and many storms thereafter. When the falls aren't there, one's eyes are free to wander over the incredible cliffs that surround the dry watercourse. Yosemite Point and the Lost Arrow stood out boldly in the sun (in the picture above).
We barely had time to reach the Gateway View before the sun settled below the horizon. Only the vertical face of El Capitan was still catching the rays of light, and it soon faded.
The Moon peeked out from the cliffs to our right.
As the valley floor settled into darkness, the sky still glowed. It was a peaceful scene, filled with a serenity that is so sadly lacking right now. We enjoyed the scene until the darkness descended and we headed home.

To help those whose lives have been destroyed in the fire, you can find some ideas here: https://www.sfgate.com/california-wildfires/article/How-to-help-fire-victims-13381066.php

Thursday, April 12, 2018

After the Deluge: Yosemite Valley a Day Later (and a sight I've never seen in more than 100 visits)

Yosemite National Park is a treasure. And the gem of the park is Yosemite Valley. There are spectacular spots to visit throughout the park and region, but ultimately, the sheer granite walls and booming waterfalls are the heart of this part of the Sierra Nevada. Most people know this of course, and the valley struggles with the desires of millions of people who wish to see the park for themselves. There are horror stories of absolute gridlock throughout the valley, with upset families who wait for hours just to get into the park, and then never find a place to park and get to know it better. I can barely imagine the frustration of devoting a hard-earned vacation to see the place and then have it spoiled by the chaos of too many people.
Bridalveil Fall (620 feet) and the Leaning Tower at the west end of the valley
I've been privileged to live relatively close to the park, and in 30 years, I've been there over a hundred times. I've quite literally never had a bad time, but part of the reason is that I've been able to pick and choose the times I visited. It turns out that the time most people set aside for vacation, in July or August, is possibly the least interesting time to do so. It's still spectacular, but the crowds are the worst, the waterfalls mostly dry, and it's hot. In fall, the valley is quieter, and the oaks and dogwoods add a splash of color. Winter brings snow and silence. Spring is noisy because of the waterfalls booming from the canyon rim. If your schedule allows, go there in the off season!
Ribbon Falls only flows in the spring; it's the highest free-falling waterfall in the park at 1,612 feet.
Of course, if you come at another time of year, you would be taking a chance with the weather. That's what happened to me last week. I was scheduled to take my students there on Saturday, but fate intervened with an epic warm tropical storm that dumped inches of rain on the snowpack. The Merced River swelled to nearly 14 feet (10 is official flood level) and major roads in the valley were under a few feet of water. For one of very few times in its history, the park was closed as a precaution and people were evacuated. I was luckily able to reschedule for Sunday, because the sun came up in a cloudless sky and the difference between the two days was astounding.
Upper Yosemite Falls, 1,430 feet high, the second highest in the park after Ribbon Falls (above).
I included some direct comparisons between Saturday and Sunday in my previous post (with thanks to the Park Service for posting pictures of the storm). Today I am offering views of some of the classic views in the park, revealing the vast amounts of water still flowing into and through the valley. The Merced River had subsided somewhat but was still flowing at flood level, but only barely. The main effect was the low-lying valley meadows that were still underwater (the next two pictures).
A flooded Cook's Meadow forms the foreground for Upper Yosemite Falls.
The occasional flooding of the meadows is part of what maintains the meadows as open areas. Tree saplings are smothered underwater, and only grasses and sedges that can survive the high water table. Not all of the meadows have survived however. Since the park was established, some of the original meadows have progressed into thick forest...there are only about 65 acres of meadows left out of the original 745 acres that existed at the time of European discovery. The growth of the forest is largely the result of fire suppression. The park service will occasional burn some of the meadow margins on purpose to help maintain the integrity of the open spaces.
No visit to Yosemite Valley would seem complete without a view of Half Dome, but I have been there a fair number of times when my students never had a chance to see it. When rain is falling, it can be completely hidden in the clouds. But on Sunday it was there in all its glory. The unique shape is due to a combination of exfoliation (the fracturing of rocks parallel to the surface, and jointing, which is the result of expansion as the rock is exposed at the surface. Exfoliation, which tends to remove corners and edges, leads to the rounding of the rock into the dome shape. But a prominent joint crossed the dome, and glacial quarrying at the base caused the rock on one side of the joint to be eroded away, forming the prominent cliff, or face, of Half Dome. When seen from other angles, it is clear that Half Dome should have been called Four-fifths Dome...
Directly across from Half Dome are North Dome and the Washington Column (below). The Royal Arches, in the center-left of the picture, are the result of a sort of reverse exfoliation, where the rock snapped out and fell from the middle of the arch, instead of the overlying cliff.
At the end of our day, we made a final stop at Valley View, one of the unheralded pullouts (only eight parking spaces) with one of the finest views to be had in all the valley (which is maybe why they call it "Valley View"). El Capitan, the sheer 3,000 feet cliff, looms on the left, while the Cathedral Rocks and Bridalveil Falls dominate the right side of the valley. A swollen flooded Merced River fills the foreground, with Bridalveil Meadow just across the raging waters. Only one of the ice age glaciers made it past this point, the so-called Pre-Tahoe (or Sherwin) Glaciation that took place around 800,000 years ago. The subsequent Tahoe and Tioga glaciers only reached the base of El Capitan and Cathedral Rocks. The Pre-Tahoe Glaciation probably did the most work in shaping the valley we see today.
I promised in the title of the post that we would include a sight I have never seen in more than 100 visits to the valley. We arrived that day when the gates to the valley reopened, at noon. A great many other people arrived at the same time, and for the first two hours the valley felt crowded. But by 4 PM, most of the visitors were already on their way back home, and the parking lots were practically empty. That is a sight in itself. But it was the drive out that astounded me.  Every time I visit the valley, Northside Drive from Curry Village to the Visitor Center area is always full of cars. Always.
But these two pictures show the astounding sight...not a single car ahead of us or behind us. For a few precious moments, we had the valley to ourselves. It's something I've never seen before, ever.

There's a secret though...even on the most crowded days in Yosemite Valley, you can find peace, serenity, and quiet. It requires that you park the car and get out. Not every trail is crowded, and in some places you can make your own path through the forest. The number of fellow hikers decreases exponentially with the distance from any paved road. If you are ever given a precious few moments in this grandest of valleys, give it a try. You won't regret it.
And that's the way it was, after the deluge...