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Bear Gulch Cave

Pinnacles National Monument

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ADDED: Feb 2, 2005 18:33VIEWS: 4,484
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Bear GrassBear Gulch Reservoir >
Bear Gulch Cave
Bear Gulch Cave (downstream from the dam) owes its origin to rapid flood events and debris flows which episodically carve the canyon. The cave consists of passages between large spheroidally-weathered boulders of volcanic tuff. The caves exist because the stream downcutting is proceeding faster than the rock can break down into sediments and soil.


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