Photography . . . Travel . . .

Sunday, July 22, 2018

Devils Postpile National Monument - California

We spent a few days in Mammoth Lakes earlier this month, and one of high points of the trip was a visit to Devils Postpile National Monument.

According to the National Park Service pamphlet, about 82,000 years ago basalt lava flowed here from an unknown source.  This particular lava flow was thick, with a consistent mineral composition, and it cooled slowly and evenly - apparently ideal for column formation.  As the lava cooled it contracted and split into the symmetrical, vertical, hexagonal columns that now make up Devils Postpile.  About 20,000 to 12,000 years ago a glacier flowed down the Middle Fork of the San Joaquin River - the moving ice carved away one side of the postpile, exposing a shear wall of columns 60 feet high.  Erosion and earthquakes later caused many of the columns to fall, and they now lie fragmented on the talus slope below the postpile.

Click here to see a few more images from Devils Postpile and some other things we saw on our recent road trip to Mammoth Lakes, California.

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San Diego, California, United States
About me . . . When I'm not working I like to be out exploring and photographing. I do this blog just for fun, and to be able to share these images with friends. I hope you enjoy viewing these images as much as I enjoyed creating them.

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All of the content and images on this site (c) Frank B. Baiamonte. If you would like to use any of these images please contact me via email at to discuss terms of usage. Note that images from the San Diego Zoo and Safari Park are not available for commercial usage. You can also see more on my Instagram page @frankbaiamonte.

Header image: Cibola National Wildlife Refuge, Cibola, Arizona. End image: Downtown San Diego, California skyline from Coronado Island. Profile picture: Craters of the Moon National Monument, Idaho, by Heather Baiamonte.