Redcloud Cliff – Prominent Geological Features of Crater Lake National Park
Located near the center of the eastern Crater Lake caldera rim, Redcloud Cliff takes its name from the reddish-yellow tuff or tuffaceous dacite that underlies it’s principle flow.[Cloud Cap Dacite Flow, The Geology and Petrography of Crater Lake National Park (1902)] Redcloud Cliff is a dacite flow overlain by pumice and glacial till and underlain by an older dacite flow. Beneath the older dacite flow lie thick deposits of pumice and welded tuff, and then a succession of andesite flows….[Inter-andesitic Dacite Pumice on the Caldera Walls, The Geology of Crater Lake National Park, Oregon (1942) by Howell Williams]
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