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Geology of National Parks, 3D and Photographic Tours

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 more massive and resistant lava flows within the Columbia River Basalt series.
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