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Devils Postpile National Monument

End of CA-203 West
Mammoth Lakes, CA 93546

Toll free phone: 760-934-2289

Local phone: 760-934-2289

This unique geological structure features thousands of hexagonal basalt columns formed 100,000 years ago when lava flow slowed and then cooled and cracked. The area is accessible in summer months, and a mandatory shuttle offers visitors transportation to Devils Postpile and other Reds Meadow areas. Catch the shuttle from the Mammoth Adventure Center at Mammoth Mountain Main Lodge.

Visiting Devils Postpile requires a one-mile roundtrip hike. The trail is not fully accessible to wheelchairs at this time.

Traveler Reviews

TripAdvisor Traveler Rating

Overall Rating: 4.5

based on 963 reviews

Hiking Through
You can see Devils Postpile off the John Muir Trail but if you want to visit the ranger station you need to go off trail. Neat place to visit. It’s not far from Reds Meadows.
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Beautiful hiking area
Fascinating basalt formations in the monument itself and a very nice hiking area in general. The bus access allows you to do one way hikes in the area using it as a shuttle and the considerable...
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Incredible Rock Formation
Devils Postpile is a very interesting place to visit. It does not take long to visit the area, but it is a long bus ride to Devils Postpile. You must first get your tickets for the bus ride. The...
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Amenities

Full day

Guides & Tours

Restrooms

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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.  Visitors can...
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