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Scoria Point in Theodore Roosevelt National Park
Scoria is the local name for clinker rock, which is formed when coal veins burn and the iron within overlaying rock oxidizes, South Unit of Theodore Roosevelt National Park, North Dakota, USA
Author: Lee H. Rentz
© 2018 Lee H. Rentz; All Rights Reserved
Photo size: 1.5 Mpixels (4.29 MB uncompressed) - 1500x1000 pixels (5x3.3 in / 12.7x8.5 cm at 300 ppi)