Devils Postpile National Monument, Mammoth Lakes

#1 of 13 in Nature in Mammoth Lakes
Must see · Geologic Formation · Nature / Park
See rare geometrically shaped basalt formations and 30 m (100 ft) tall waterfalls at Devils Postpile National Monument, which is within the Ansel Adams Wilderness. The formations were created 100,000 years ago when lava was flowing and cooling down and glaciers eroded, polished, and fragmented the basalt into long, symmetrical columns. Reaching 18 m (60 ft) high and ranging from 61 cm (2 ft) to 1.1 m (3.5 ft) in diameter, the formations give an impression of tall posts stacked in a pile. At the park, you can hike, camp, fish and go horseback riding. Look for animals, such as black bears, coyotes, and mule deer. You can explore on 13 km (8 mi) of trails on your own or on a guided tour. Use our Mammoth Lakes road trip website to arrange your visit to Devils Postpile National Monument and other attractions in Mammoth Lakes.
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Devils Postpile National Monument reviews

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TripAdvisor traveler rating 4.5
958 reviews
  • We visited on July 2nd and tried to drive around 10.00am. Got stopped at the gate as they have resumed the Shuttle services back. So went back to the Gondola start area and parked on the road-side...  more »
  • We went to the Mammoth Lakes area just to visit this National Monument. It was a lovely walk, and not difficult. The drive to the monument is really beautiful, but make sure you head out early...  more »
  • Devils Postpile is definitely a must see. The trail is very tame and can be hiked by just about anyone. According to the ranger, she said that it was ADA compliant. I still can't get over the fact that these shapes formed naturally. It is a truly amazing site! Getting to the top is a little more difficult, but it has a great view.
  • Beautiful place to visit... easy hike.. for adults and kids. Bring water during the hot times of day. Be prepared to fall in love. .4 mile hike from the Ranger Station and you can take a shuttle to the Ranger station or drive there. Enjoy seeing some nature and the beauty that is created here.

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