• Devils Postpile Formation

    Devils Postpile

    National Monument California

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  • Monument Open Until October 31, Visitor Services Limited this Fall

    Devils Postpile and the Reds Meadow Valley will be open until October 31, weather permitting. The shuttle bus is no longer running so visitors can drive their vehicles into the monument. Parking is limited and can be full on weekends, plan accordingly. More »

  • 37-Foot Vehicle Length Restriction on the Devils Postpile Access Road

    Devils Postpile has a limit of 37 feet for vehicles on the monument road. This may change during weather events, construction activities, vehicle congestion, or for safety reasons. Call or email for more information. More »

Operating Hours & Seasons


Devils Postpile National Monument is open for the 2014 season.

The mandatory Reds Meadow Shuttle Service is no longer running. Visitors are now able to drive their personal vehicles into the valley but parking is limited. Parking lots can get full on weekends so plan trips accordingly.

Monument Hours: Devils Postpile National Monument and the Reds Meadow Valley are open 24 hours/day 7 days/week during the operating season. If planning a trip in June, September or October, please call ahead or check the website for up to date weather and closure information. The monument will close temporarily if winter weather arrives early.

Ranger Station Hours: The Devils Postpile Ranger Station is open daily from 9:00 a.m.-5:00 p.m. through September 14. Beginning September 15 the ranger station will be open Fridays through Sundays 9:00 a.m.-5:00 p.m. until Columbus Day. The ranger station will close for the season after Monday, October 13.

Ranger-led Programs: Ranger led walks to Devils Postpile have ended for the 2014 season. Other ranger programs may be available on Saturdays and Sundays. Check at the ranger station for more information or look at our schedule of events.

Campground: The Devils Postpile campground is currently open. The campground will close for the the 2014 season on Monday, September 15, at 12 pm.

Trails and Day Use Areas: All trails and day use areas in the monument are open and snow free.

Overnight Parking: During the shuttle bus operating season, visitors who are exceptions to the shuttle bus and are backpacking may use the overnight hiker parking just outside the monument boundary. There is a 1/4 mile walk from there to the trailhead along a trail. Shuttle bus users should leave their vehicle at the shuttle bus parking area at Mammoth Mountain. There is no charge to park your vehicle overnight. Please do not leave any food or scented items in your vehicle when leaving it overnight. Lockers are available at Mammoth Mountain Main Lodge. After shuttle bus operation, backpackers may drive into the monument. There is no overnight parking in the Reds Meadow Valley or Devils Postpile after October 15. Backpackers need to arrange for a shuttle or taxi or be prepared to hike out. The road will not be plowed after October 15.

Backpackers: If your trip starts while the shuttle bus is operational and ends after the shuttle bus season, please notify the staff at the Minaret Vista when you arrive. You will be able to drive into the valley. You must provide your wilderness permit as proof of your trip plan and must pay the standard amenity fee.


The mandatory Reds Meadow Shuttle is no longer operating for the 2014 season. During shuttle bus operating season (June 14 to the Wednesday after labor Day), visitors not meeting one of the exceptions must ride the shuttle bus.

Visitors driving into the Reds Meadow Valley before or after the operating hours of 7:00 a.m.-7:00 p.m. must pay the standard amenity fee of $10/day or show an interagency pass at the Minaret Vista Station.




Spring is not generally a long season in the Sierra. At Devils Postpile, it is the time that the meadows flood, the rivers swell, and everyone waits for roads to clear. Depending on the year, winter can hold on into June, dropping snow on nearby Mammoth Mountain until Fourth of July. But other years, the shooting stars start to bloom in early June, just as the water recedes from the meadows. Visitors in early June should check conditions often as road closures due to weather are not uncommon and typically opening dates are uncertain.


When the monument opens in mid-June, visitors can expect a relatively quiet experience with uncrowded trails, maybe a snow patch or two, and amazing water flows at both Rainbow Falls and Minaret Falls usually until at least Fourth of July weekend. After that, although the waterfalls are still full, but so are park trails, overlooks, and shuttle buses. The mandatory Devils Postpile/Reds Meadow shuttle bus typically begins operations in June (weather permitting) and runs through the Wednesday after Labor Day, which is considered the end of the summer season. In August, crowds peak, campgrounds are typically full during the weekends, and stream flows in the waterfalls diminish significantly. Although Rainbow Falls flows year round, it is most impressive in June and July. August, however, is typically the warmest month and crowds usually subside around the end of the month just before the last rush during Labor Day weekend.


Fall is a beautiful time to be in the monument, but the weather can be a bit unpredictable. Generally, days are warm and nights are cold through early October. Blue skies prevail, but winter storms are not far away. Visitors in September and October will enjoy relatively uncrowded trails and facilities and fall color that typically peaks in early October. Be prepared for rapidly changing weather, particularly if visiting in October. The ranger station and campground are usually open through Columbus Day weekend, weather permitting. The monument is scheduled to be open every year until October 31, however, winter storms tend to move this closing date up most years. Temporary closures due to weather are not uncommon in the fall. If you catch it on the right day, however, there is nothing better than a cool fall breeze rustling the aspen and cottonwood trees along the San Joaquin River.


This may seem an odd time of year to visit Devils Postpile since the road is closed and the only access is by ski or snowshoe. But winter use is growing and the Reds Meadow Valley is a beautiful and wild place in this season. Trips into the Reds Meadow Valley are not for novice backcountry travelers. No facilities exist in the winter and the only way out of the valley is to climb the 1500+ feet back to the Minaret Vista. For the experienced backcountry traveler, however, many great adventures await. Make sure you have an in depth knowledge of winter travel and basic avalanche safety equipment before journeying into the valley. Check with the Eastern Sierra Avalanche Center for current avalanche conditions, plan ahead, and it is best to not travel alone.

Did You Know?


The Devils Postpile that you see today is only a fraction of the size the original lava flow formation that filled this valley. Natural processes, especially glaciers, have eroded the rest.