U.S. Geological Survey Photographic Library

ID. King, 4

Mono Lake in the Sierra Nevada Mountains of California. Obsidian Crater in the foreground. Photo by T.H. O'Sullivan, March 1868.U.S. Geological Exploration of the Fortieth Parallel (King Survey).

Mono Lake in the Sierra Nevada Mountains of California. Obsidian Crater in the foreground. Photo by T.H. O'Sullivan, March 1868.U.S. Geological Exploration of the Fortieth Parallel (King Survey).

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