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.

Please Note: The mandatory shuttle runs through September 5, 2022. After that time, visitors can enter in their own vehicle. Starting on October 1, 2022, please be prepared for up to 30 minute delays due to tree work along the road. The road will close for the season on October 11, 2022.

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 973 reviews

Postpile Fantastic

An amazing geological formation is well worth the hike. If you can make it to the top, some amazing views of the Postpile and the surrounding forest. Rainbow Falls is just down the road and both...
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Very unique

Something difference for sure it truly looks like someone built it. The one side seems to be collapsing. Short hike in most people can do it. The road going down is one lane with two way traffic for...
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Amenities

Full day

Guides & Tours

Restrooms

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