• Devils Postpile Formation

    Devils Postpile

    National Monument California

There are park alerts in effect.
show Alerts »
  • Devils Postpile National Monument is Open for the Season

    Devils Postpile is open for the 2014 season. The ranger station will be open daily from 9am-5pm. The Devils Postpile campground is open. Ranger walks to Devils Postpile occur daily at 11 am. More »

Bicycling Information


For those visitors who wish to bike down to the Postpile, bicycles are allowed down the road free of charge. If, however, visitors choose not to ride back out of the Valley and opt to use the shuttle instead, they must pay the transportation fee. The shuttle buses will take bicycles if space is available.


The Reds Meadow Road beyond Minaret Vista twists and turns for about 6.5 miles and 2000 vertical feet down to Devils Postpile. The road is paved, however, it is very narrow and cyclists should be aware of debris. It is a beautiful and challenging ride, particularly for those who make the trek back up to the Vista. For those looking for just a downhill ride, consider riding the shuttle bus back to your vehicle at the Adventure Center at Mammoth Mountain. For specific details and tips for a safe cycling trip in the Reds Meadow Valley, click here.


Although trail riding is not permitted on any trails in the Monument, riders may want check at the Mammoth Welcome Center for information about mountain bike trails in the town of Mammoth Lakes and at Mammoth Mountain.


While riding down Reds Meadow Road, bicyclists should exercise extreme caution as they must share the road with large RVs, stock trailers, and shuttle buses. Bikes are subject to the same speed limits as all other vehicles on the roadway. Please be cautious of debris which frequently litters the road.

Bicyclists can park their bikes at the bike rack provided adjacent to the Ranger Station.
Visitors are welcome to bike down Reds Meadow Road to the Monument.  Bikes, however, cannot be taken on trails.  For bicyclists interested in hiking in the area, a bike rack for temporary storage is available next to the Ranger Station.
NPS Photo

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.