tag:blogger.com,1999:blog-5211670216140060946.post8651930798668114347..comments2024-03-17T18:37:36.377-07:00Comments on Geotripper: Friday's Mystery Photo ExplainedGarry Hayeshttp://www.blogger.com/profile/00531226195147986457noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-5211670216140060946.post-64002328622529009412009-02-17T22:48:00.000-08:002009-02-17T22:48:00.000-08:00The setting is pretty convincing, in that this par...The setting is pretty convincing, in that this particular pothole is surrounded by hundreds of others of all sizes and depths that were clearly formed by flowing water. The falls are at the top of a forty foot thick lava flow, so tree molds are not likely. I would imagine that because most of the abrasion is done by large cobbles in the very bottom of the pothole, once it reaches a certain depth, no widening occurs on the upper part of the holeGarry Hayeshttps://www.blogger.com/profile/00531226195147986457noreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-43326800533775322002009-02-17T18:17:00.000-08:002009-02-17T18:17:00.000-08:00Okay, I'll bite. What features suggest that the fi...Okay, I'll bite. What features suggest that the first hole is an eddy pothole? None of the ones I've ever seen amount to more than a couple of feet deep. How does the water flow keep the grinding material sufficiently energetic to grind down that depth but not enough to widen the diameter of the pothole?Anonymousnoreply@blogger.com