![]() Devils Postpile National Monument hides deep in the Inyo National Forest near Mammoth Lakes. This 800-acre monument is located at 7,600 feet elevation in the eastern Sierra Nevada. The eruption of a basalt lava joined actions with subseqently glacial movement to form these long and symetrical basaltic columns. |
![]() The tile look on top of the postpile |
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![]() Measurement |
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![]() Sideview |