Devils Postpile National Monument

The Devils Postpile basalt formation resembles tall columns.
Devils Postpile formation is one of many features to see at Devils Postpile National Monument.
Hexagonal fractures that make up the columns at the postpile with glacial polish
Part of the popular loop trail will take you to this unique geologic formation.
Waterfall with faint rainbow
Rainbow Falls
Soda Springs Meadow and San Joaquin River
Soda Springs Meadow and San Joaquin River
Photos: National Park Service

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.

Plan a Visit

NPS DesignationNational Monument
Park State / Territory MembershipCalifornia
Current Alerts1
Visitor Centers1
Campgrounds0
Things To Do0

Core visitor information on this page is sourced from the National Park Service. NPD proximity sections use NPS reference coordinates and straight-line distance. Local source bundle updated Sep 27, 2026. View the official NPS page.

Weather & Conditions

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…

NPS Reference Location

Park state / territory membership: California. This map uses the National Park Service reference coordinate. It may represent an administrative or reference point rather than a park entrance, trailhead, visitor center, or the nearest access point. Use the official NPS directions below when planning travel.

Operating Hours

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.

FridayAll Day
MondayAll Day
SaturdayAll Day
SundayAll Day
ThursdayAll Day
TuesdayAll Day
WednesdayAll Day

Activities

AstronomyStargazingBikingRoad BikingCampingCar or Front Country CampingFishingHikingFront-Country HikingHorse TrekkingHorseback RidingJunior Ranger ProgramWildlife Watching

Current Alerts

Reds Meadow Road Access Restrictions in 2026

Reds Meadow Road remains under construction in 2026 and will be closed Monday through Friday through November 1 (closed for the season starting November 2).

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.

View Official Directions

Contact & Address

The NPS-listed address may be an administrative office, visitor center, mailing/contact location, or other park facility rather than a park entrance.

NPS-Listed AddressDevils Postpile Access Road, Mammoth Lakes, CA, 93546

Topics & Themes

AnimalsClimate ChangeFireForests and WoodlandsConiferous ForestsGeologyGroundwaterFreshwater SpringsMountainsNatural SoundsNight SkyAstronomyRiver and RiparianScenic ViewsTrailsVolcanoes

Visitor Centers

Devils Postpile Ranger Station

The Devils Postpile Ranger Station is open daily from 9 am - 5 pm during the operating season which is typically mid-June to mid-October. Rangers…

Nearby Cities for Trip Planning

These cities are ordered by straight-line distance from the NPS reference coordinate. They are comparison starting points, not official park gateways or road-distance estimates. Trails and other distributed units may extend far beyond this reference point.

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