Near American Falls in Power County, Idaho — The American West (Mountains)
Massacre Rocks - A Clashing of Cultures
Photographed by Barry Swackhamer, May 14, 2018
1. Massacre Rock - A Clashing of Cultures Marker
These reported incidents of Shoshone Indian attacks on emigrant wagon trains in this gap and surrounding area between 1851 and August 10, 1862, led to the naming of these rock outcrop as "Massacre Rocks."
The granite marker was dedicated by the Sons of Idaho on July 4, 1927. Later removed for the construction of the interstate highway, the marker was repositioned by the Idaho Department of Parks and Recreation, 153 feet northwest of its original location, on October 8, 1997.
This rock outcrop continues to stand guard over the final, unmarked resting place of untold pioneers who perished during the westward expansion of this great nation.
Erected by Idaho State Parks and Recreation.
Topics and series. This historical marker is listed in these topic lists: Disasters • Indigenous Peoples and Communities • Roads & Vehicles • Wars, US Indian. In addition, it is included in the Oregon Trail series list. A significant historical date for this entry is August 10, 1862.
Location. 42° 40.512′ N, 112° 59.256′ W. Marker is near American Falls, Idaho, in Power County. It can be reached from Park Lane near Register Road, on the left when traveling west. Touch for map. Marker is in this post office area: American Falls ID 83211, United States of America. Touch for directions.
Regionally, this marker is in Idaho’s Bear River Country. It is also in the American Mountain West. Globally, it is in North America, the Western Hemisphere, the Western World, and the Anglosphere.
Other nearby markers. At least 8 other
this page online
Other markers no longer nearby. American Falls Power Plants (was approx. 8.9 miles away but has been confirmed missing); Emigrant Trails (was approx. 8.9 miles away but has been confirmed missing).
More about this marker. This marker is located at the end of Memorial Trail which has its trailhead near the Massacre Rocks State Park Visitor Center.
Photographed by Barry Swackhamer, May 14, 2018
2. Massacre Rock - A Clashing of Cultures Marker
Photographed by Barry Swackhamer, May 14, 2018
3. Massacre Rocks
The marker is to the left of the trees. Massacre Rocks are in the background.
Credits. This page was last revised on July 2, 2025. It was originally submitted on October 2, 2018, by Barry Swackhamer of Brentwood, California. This page has been viewed 2,920 times since then and 80 times this year. Photos: 1, 2, 3. submitted on October 2, 2018, by Barry Swackhamer of Brentwood, California.
