The Devils Postpile basalt formation resembles tall columns.
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Devils Postpile National Monument

CA

Hexagonal fractures that make up the columns at the postpile with glacial polish
Waterfall with faint rainbow
Soda Springs Meadow and San Joaquin River

Park Alerts (1)

Reds Meadow Road Access Restrictions in 2026: Reds Meadow Road remains under construction in 2026 and will be closed Monday through Friday from June 13 through July 1, then Monday through Wednesday from July 2 through September 20, then Monday th...

About Devils Postpile National Monument

Established in 1911 by presidential proclamation, Devils Postpile National Monument protects and preserves the Devils Postpile formation, the 101-foot high Rainbow Falls, and pristine mountain scenery. The formation is a rare sight in the geologic world and ranks as one of the world's finest examples of columnar basalt. Its' columns tower up to 60 feet and display a striking symmetry.

Available Activities

Astronomy
Stargazing
Biking
Road Biking
Camping
Car or Front Country Camping
Fishing
Hiking
Front-Country Hiking
Horse Trekking
Horseback Riding
Junior Ranger Program
Wildlife Watching

Weather

Devils Postpile National Monument is located at 7,560 feet above sea level just west of the Sierra Nevada crest. As such, it experiences typical summer weather in the Sierras. Afternoon thunderstorms are possible in July and August.

Daytime temperatures can range from the mid-70s to to mid-80s (degrees Fahrenheit). Evening temperatures can drop into the low 40s (and even the low 30s in the months of September and October).

Getting There

Shuttle Bus: Most visitors must park at the Mammoth Mountain Ski Area and use the mandatory shuttle. The shuttle bus operates from mid-June through the Wednesday after Labor Day. By car: From U.

S. Highway 395, drive 10 miles west on S.R.

203 to Minaret Vista and then another 8 miles on a paved, steep mountain road. Please note that this road is single lane for approximately 3 miles. By plane: The closest commercial airport is the Mammoth Lakes/Yosemite Airport (MMH), located on U.

S. Highway 395.

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Hours

Devils Postpile National Monument

In the operating season, Devils Postpile National Monument is open 24 hours a day, 7 days a week. The Monument usually opens in mid-June. By mid to late October, early winter storms in the High Sierra typically begin to bring snow to the area.

Location

CA

37.6153, -119.0874

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