This series of posts is called a Convergence of Wonders because much of the landscape we traversed on our trip was influenced by the subduction zone (the convergent boundary) that has been active off the coast for the last 200-300 million years, right up to the present day. It is called the Cascadia Subduction Zone. On the third day of the trip we got as close to the subduction zone as we could, crossing the Cascades and setting up camp on the coast at the mouth of the Columbia River. Our destination at the end of the day was the ominously named Cape Disappointment.
last post at Newberry Volcano, but this caldera formed in a far more violent fashion. Because it formed tens of millions of years ago, the shape and form of the caldera has been lost to erosion. We wouldn't see a "modern" (in the geologic sense) caldera until we reached Yellowstone a week down the road.
Fort Vancouver was a fur trading outpost in the 1840s and later a military installation. An active archaeological dig was taking place as the U.S. Park Service was trying to better understand the arrangement of private housing units adjacent to the fort. Employees of the Hudson Bay Company were provided with some benefits, but they and their families had to grow much of their own food.
The hour was growing late, and we had another hour of driving. As we crossed the Columbia at Astoria, I took a single picture of the ghostly presence of Mt. St. Helens in the far distance. As will be seen, it was the only time we would see the mountain on the trip.