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, the adjacent Breaks country, and
portions of Arrow Creek, Antelope Creek, and the Judith River.
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.
The area was declared a National Monument in January, 2001.
Though largely unchanged in the more than 200 years since
Meriwether Lewis and