Lake Lenore Caves
Lake Lenore Caves are a series of overhangs along the cliffs along the Grand Coulee. The caves (not caverns) formed from both erosion from waterfalls spilling into the Grand Coulee and by exfoliation of a crumbly basalt layer between to more massive and resistant lava flows within the Columbia River Basalt series.
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The URL is: https://gotbooks.miracosta.edu/gonp/grandcoulee/html/gc686.htm
Last modified: 1/5/2011