Devils Postpile National Monument
Top of basalt columns
Rainbow Falls near Devils Postpile

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Devils Postpile National Monument

1 Reds Circle
Mammoth Lakes, CA 93546
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The Monument features thousands of hexagonal basalt columns formed 100,000 years ago when lava flow slowed and then cooled and cracked. Accessibility: 1 mile (1.6 m) round-trip-hikeReds Meadow Scenic Shuttle, serving Devils Postpile National Monument, Reds Meadow and Rainbow Falls. This scenic shuttle is mandatory during operation season and was implemented to reduce traffic on the one-lane road and environmental damage caused by vehicle in these fragile environments.

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