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Obsidian Cliff, Yellowstone National Park, Wyoming
Obsidian Cliff as it appeared in 1888 (from a USGS monograph by Joseph Iddings).
Obsidian Cliff from the same location as above as it appeared in the summer of 1998.
Facing north towards Obsidian Cliff across Obsidian Creek and the now almost dry Beaver Lake (1998).
Postcard of Obsidian Cliff dating from late 1800's or early 1900's.
1917 postcard of Obsidian Cliff.
Panorama view of Obsidian Cliff (1998).
Photos by Craig E. Skinner, Northwest Research Obsidian Studies Laboratory
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