Official Government Website
Massacre Rocks State Park
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Contact the Park
Address:
American Falls, ID 83211
Phone:
Hours of Operation:
Upcoming Events
Located on the mighty Snake River, Massacre Rocks State Park is rich in history and full of year-round recreation.
Miles of hiking trails provide access to a bounty of plant and bird species, Oregon Trail history, and geologic wonders. Rock climbers enjoy numerous routes. A world-class disc golf course provides players with one of the most challenging courses in Idaho. A scenic picnic area surrounds Register Rock, where emigrant names are inscribed, creating a desert oasis for the modern traveler. Remnants of the Oregon Trail are seen easily from either end of the park.
Park History
Massacre Rocks derived its name from an emigrant wagon party skirmish. Register Rock, located two miles from the park, is home to a huge boulder that holds the signatures of Oregon Trail emigrants who stopped for an evening of rest before continuing on their journey. Today, Register Rock is a beautiful picnic area complete with shade trees, lawn, restrooms, fire pits, and barbecue grills.
The park is rich in geological history. Volcanic evidence is everywhere. The Devil’s Gate Pass is all that remains of an extinct volcano. The prehistoric Bonneville Flood shaped the landscape of the area, rolling and polishing the huge boulders found throughout the park. The flood was caused when eroding waters broke through Red Rock Pass near the Idaho/Utah border.
Lake Bonneville, which covered much of what is today the state of Utah, surged through the pass and along the channel of the Snake River in a few short months. For a time, the flow was four times that of the Amazon River. It was the second largest flood in the geologic history of the world.
- Hike
- Bike
- ADA Cabin
- ADA Campsite
- ADA Restroom
- Dump Station
- Electricity
- Fire Rings
- Firewood Sales
- Flush Toilets
- Indoor Restrooms
- Indoor Showers
- Picnic Areas
- Vault Toilets
General Accomodations
- Cabins
- RV Campsites
- Tent Campsites
General Information
Cabins rent for $60-$72 per night. The one-room cabins sleep up to five on bunk beds and futons. Cook outside on the grill-covered fire pit. The cabins are powered, heated and air conditioned. Click to reserve.
For after hours and off season key access for your cabins please call a Park Ranger at (208) 484-1936 or 208-220-0332.
There is no additional information about group accommodations available.
No additional seasonal information provided.