Devil's Postpile National Monument
N 37° 37.000 W 119° 05.000
11S E 316130 N 4165325
A bizar mosaic carved in basalt.
Waymark Code: WMDWG
Location: California, United States
Date Posted: 05/30/2006
Views: 125
The Devils Postpile formation is a rare sight in the geologic world and ranks as one of the world’s finest examples of columnar basalt. Its columns tower 60 feet high and display an unusual symmetry.
The postpile was created by a lava flow sometime between 100,000 and 700,000 years ago (depending on the dating method). Much of the mass of pooled lava cooled slowly and evenly, which is why the columns are so long and so symmetrical. A glacier later removed much of this mass of rock and left a nicely polished surface on top of the Postpile.
Devilish Location: Not listed
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