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.

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.

  • 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

  • Animals
  • Climate Change
  • Fire
  • Forests and Woodlands
  • Coniferous Forests
  • Geology
  • Groundwater
  • Freshwater Springs
  • Mountains
  • Natural Sounds
  • Night Sky
  • Astronomy
  • River and Riparian
  • Scenic Views
  • Trails
  • Volcanoes
  • Watersheds
  • Waterfalls
  • Wetlands
  • Marshes
  • Swamps
  • Wilderness

Devils Postpile Formation

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 at the top of Devils Postpile

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.

Rainbow Falls

Waterfall with faint rainbow

Rainbow Falls

Soda Springs Meadow and San Joaquin River

Soda Springs Meadow and San Joaquin River

Soda Springs Meadow and San Joaquin River