Variety of ripple marks in pieces of Kayenta sandstone line amphitheater path at Saddlehorn campground, Colorado N M http://pic.twitter.com/Zxb6OeKUMP
— Concord Geology (@CUGeology) May 23, 2017
via Twitter https://twitter.com/CUGeology
May 23, 2017 at 07:42PM
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