Massive boulders and debris flood deposits in Mosaic Canyon, Death Valley National Park, Inyo County, California

Alluvial deposits and large boulders of bedrock in Mosaic Canyon in Death Valley National Park (Inyo County). Episodic storms produce debris floods and debris flows in all canyons in the Death Valley region. Great storms that happen perhaps only once or twice a century will wipe out tell-tale traces of smaller events and will move sediments trapped in the upper canyon onto the alluvial fans in the valley below.

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