Devils Postpile National Monument

End of CA-203 West
Mammoth Lakes, CA 93546

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Reds Meadow Road opens mid-June: Closes in fall.

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

based on 964 reviews

A must see

When I was a kid about eight years old my aunt brought back pictures from the Devils Postpile national monument, I was absolutely amazed at this location. Finally this year I was able to visit it for...
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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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Amenities

Full day

Guides & Tours

Restrooms

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