• Devils Postpile Formation

    Devils Postpile

    National Monument California

There are park alerts in effect.
show Alerts »
  • 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 »

Traveling Trunks

Ready to bring an outdoor adventure to your school? These trunks will help you study climate change close to home and connect it to the bigger picture in National Parks and globally. Currently Devils Postpile has two lesson trunks available for loan. They are tied to two existing educational units, but could also be connected to other lessons or used on their own. Each kit focuses on a different aspect of climate science.The Snow Study Trunk requires access to snow and includes instructions for taking snowpack measurements. The Stream Flow River Study Trunk requires access to a small stream, creek, or river and will involve measuring streamflow.

  • Spring flow at Lower Falls

    Featured Materials

    Streamflow River Study Trunk

    Rivers and streams are a big piece of the climate puzzle. How does your river fit in? Explore »

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.