Devils Postpile National Monument
Overview
Please Note: Travel to Reds Meadow Valley will be impacted during the 2024 summer season & beyond. Click here to learn more about closures, access, and limitations to this region.
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.
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Devils Postpile National Monument
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