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ORSEL 106 - Leslie Gulch BLM Area of Environmental Concern southeast Oregon.jpg
ORSEL 106 -  Towering rock formations with honeycombs are formed from compressed volcanic ash called Leslie Gulch Tuff, Leslie Gulch, BLM Area of Critical Environmental Concern, southeast Oregon, USA --- (4x5 inch original, File size: 6123x4800, 84.1mb uncompressed).