Legends Of America
Since 2003
Why am I seeing the old web design?

Legends of America


 Tip Jar

Legends Facebook Page    Legends on Pinterest    Legends on Twitter


Massacre Rocks State Park

Bookmark and Share

Massacre Rocks State Park, IdahoLocated along the Snake River west of American Falls, Massacre Rocks State Park  features a famous configuration of boulders along the south bank of the Snake, known alternatively as Massacre Rocks, "Gate of Death", or "Devil's Gate."  


A famous spot along the Oregon Trail and California Trail during the middle 19th century, emigrants gave this name to the narrow passage of the trail through the rocks, from the fear of possible ambush by Native Americans. According to diaries of emigrants, settlers in five wagons clashed with Shoshone just east of the rocks on August 9th and 10th, 1862. Ten emigrants died in the fight, which involved four wagon trains. The skirmishes actually took place east of the park and not at Devilís Gate as commonly believed, but the undeserved name stuck.


Actually settlers and the natives made use of the area for generations because the Snake River is accessible and relatively gentle in this part of its run, and the violent episodes were the exception, not the rule.

All thatís left of an extinct volcano, the rocks were often used as campsite for wagon trains along the trail. Many emigrants carved their names and dates on the rock face, which is now protected by a shelter. The actual passage through the rocks is now the route of Interstate 86 along the south edge of the park.

Geologically the park was created during the repeated volcanic activity on the Snake River Plain. The rocks themselves were deposited in their present location at the end of the last ice age, approximately 14,500 years ago, during the catastrophic flood known as the Bonneville Flood, when much of Lake Bonneville surged down the Snake River. A notch in the cliff on the north bank of the Snake opposite the park was the site of an ancient waterfall of a side channel of the waters in the aftermath of the flood.

The 995 acre park also includes a visitor's center describing the history and geology of the park. Massacre Rocks State Park offers access to the Snake River as well as a 50 unit campground with water and electrical hookups for RV's, picnic areas, restrooms, and hot showers.  Along the foot trails you can see remnants of the original Oregon Trail on the south side of Interstate 86.


Ruts of the Emigrant Trail near Massacre RocksContact Information:

Massacre Rocks State Park
10 miles west of American Falls, (off I-86)
3592 N. Park Lane
American Falls, Idaho 83211



© Kathy Weiser/Legends of America, updated March, 2017.











 From Legends' General Store


National Park DVDsDiscoveries America National Parks - A collection of video essays about the National Park Service and the magnificent resources they have been mandated to protect. This series is more than just abut the several dozen officially designated "National Parks", but also includes the estimated 401 official units of the National Park System including National Monuments, Preserves, Historical Parks, Historic Sites, Battlefield Parks, Military Parks, Battlefields, Battlefield Sites, Memorials, Recreation Areas, Seashores, Lakeshores, Rivers, Reserves, Parkways, Historic & Scenic Trails, Cemeteries & Heritage Areas.

National Park DVDs

National Park DVD's


  About Us      Contact Us       Article/Photo Use      Guestbook      Legends Of Kansas      Photo Blog     Writing Credits     

Copyright © 2003-Present, Legends of Americaô