Sideling Hill rock cut in Maryland, USA exposing layers of sedimentary rock folded in a broad #syncline: Schnabel Engineering, Inc.'s photo http://pic.twitter.com/0zfSdGnuju
— jaime s. sincioco (@jaimessincioco) November 4, 2017
via Twitter https://twitter.com/jaimessincioco
November 04, 2017 at 02:12PM
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