from egghill

Month: September 2013

  • Devil’s Postpile

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    egghill
    in

    Devil’s Postpile located near Mammoth Mountain and Yosemite in California, refers to columnar basalt formed when lava flowed down the San Joaquin river valley 100,000 years ago and piled up thickly, causing slow cooling of the lava and consequently the columns of ‘post’ were formed. Like beehives and bubbles, they form geometric shapes that are…

  • Petroglyphs

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    egghill
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    It took a while to find the petroglyphs on the Volcanic Tablełands. In an earlier post last fall: Volcanic Tablełands, Take Two, I talked about the petroglyphs that are on the tablelands and posted photos. You can drive miles and miles over washboard dirt roads and see only sagebrush, rabbit brush, rocks, lizards, mountains, an…