2013_09_12_MAMM-9129375
2013_09_12_MAMM-9129375
2013_09_12_MAMM-9129436
2013_09_12_MAMM-9129436
2013_09_12_MAMM-9129461
2013_09_12_MAMM-9129461
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2013_09_12_MAMM-9129481
Devil's Postpile National Monument Overview - At an elevation of 7,500 feet, the monument protects 800 acres of a columnar basalt butress, 101 foot Rainbow...
Devil's Postpile National Monument Overview
Devil's Postpile Columnar Basalt - 82,000 years ago, a 60 foot-deep flow of basalt lava of consistent mineral composition cooled slowly, forming hexagonal...
Devil's Postpile Columnar Basalt
Devil's Postpile Columnar Basalt - 82,000 years ago, a 60 foot-deep flow of basalt lava of consistent mineral composition cooled slowly, forming hexagonal...
Devil's Postpile Columnar Basalt
Devil's Postpile Columnar Basalt - 82,000 years ago, a 60 foot-deep flow of basalt lava of consistent mineral composition cooled slowly, forming hexagonal...
Devil's Postpile Columnar Basalt