Yosemite National Park, California 2008 -- Here's another view of the snaking Merced River as seen from Glacier Point. When the last glacier receded about 14,000 years ago, it left a 5 mile long lake behind a dam of rock near BridalVeil Falls. This lake gradually filled in with rock and sediment, forming a moraine. In 1878, the dam was dynamited to drain what was then pretty much a mosquito-infested swamp. The results are this fairly flat valley floor which makes these granite sides accessible even to the mobility impaired.
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