4.5
55 votes

Devils Postpile National Monument

Pacific Crest Trail, Mammoth Lakes, California 93546 USA

$
$$$$
Budget
Closed Now
Opens Sun 9a
  • Independent
  • Pet Friendly
  • Public
    Restrooms
  • No Wifi
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“A Geologic Wonder”

Established in 1911 by presidential proclamation, Devils Postpile National Monument protects and preserves the Devils Postpile formation, the 101-foot high Rainbow Falls, and pristine mountain scenery.  The 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. 

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Reviewed by
Nancy Sewell

  • 1,228 Reviews
  • 287 Helpful
October 23, 2016

Encompassing the Devils Postpile formation, Rainbow Falls and acres of stunning mountain scenery, Devils Postpile National Monument is a Mammoth Lakes must-see. The natural landmark is typically open from mid-June through mid-October.

Resembling a tidy lumber pile created by giants, Devils Postpile’s 60-foot basalt columns were formed when lava erupted in the valley nearly 100,000 years ago and filled the area to a depth of 400 feet. Then, glaciers overrode the fractured mass of lava and quarried away one side of the postpile about 10,000 years ago, exposing and polishing a sheer wall of columns.

To hike Devils Postpile, take the half-mile trail to the base, then continue uphill to the formation’s summit for incredible views. Or ramble the 2.5-mile route from the ranger station to 101-foot Rainbow Falls.

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Devils Postpile National Monument

Pacific Crest Trail
Mammoth Lakes, California
93546 USA

Hours

Closed Now
  • Sun - Sat: 9:00 am - 5:00 pm

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  • Independent
  • Pet Friendly
  • Public Restrooms
  • No Wifi
  • Yes Parking

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