Devils Postpile National Monument
National Monument · Mammoth Lakes, California
A small but spectacular 800-acre monument in the Sierra Nevada near Mammoth Lakes, preserving one of the world's finest examples of columnar basalt. The 60-foot cliff of perfectly hexagonal basalt columns formed when lava cooled rapidly about 100,000 years ago. The monument also contains the stunning 101-foot Rainbow Falls and serves as a gateway to the John Muir and Pacific Crest Trails.
Minaret Vista Road, Mammoth Lakes, California, 93546, United States
Open mid-June through mid-October only. Visitor center: 9 AM - 5 PM. Mandatory shuttle June-September.
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