Craters of the Moon National Monument and Preserve

Craters of the Moon National Monument and Preserve is a protected volcanic area in Idaho, located on the Snake River Plain. The preserve covers roughly 2,900 square kilometers (1,117 square miles) and contains several dozen cones as well as three large lava fields formed by past eruptions.

President Calvin Coolidge designated this area as a National Monument on May 2, 1924, following advocacy by geologist Harold T. Stearns. The status was later expanded to include additional portions of the volcanic landscape and ensure permanent protection.

Northern Shoshone groups once followed specific paths through the cooled lava during seasonal movements across the region. Stone circles remain visible near Indian Tunnel, evidence of these crossings through the harsh terrain.

The Loop Road stretches about 11 kilometers (7 miles) and connects to walking trails, caves, and rock formations that can be explored on foot. Most visitors arrive between late spring and early fall, when temperatures are milder and paths are easier to navigate.

The area received recognition as an International Dark Sky Park due to its minimal light pollution. These conditions make it one of the best places in the United States to observe the night sky.

Location: Blaine County

Location: Butte County

Inception: May 2, 1924

Operator: National Park Service

Website: https://blm.gov/programs/national-conservation-lands/idaho/craters-of-the-moon

GPS coordinates: 43.46170,-113.56300

Latest update: December 4, 2025 23:05