Upper Missouri River Breaks National Monument
Containing a spectacular array of biological, geological, and historical objects of interest, the Upper Missouri River Break National Monument spans 149 miles of the Upper Missouri River.
From Fort Benton
to the Charles M. Russell National Wildlife Refuge, the monument includes six wilderness study areas, the Cow Creek Area of Critical Environmental Concern, segments of the Lewis and Clark
National Historic Trail and the Nez Perce National Historic Trail, the Fort Benton National Historic Landmark, and more.