SE of Great Falls at jct. of U.S. 87, 89, and 91, Great Falls, Montana. County/parish: Cascade.
Added to the National Register of Historic Places October 15, 1966. NRIS 66000429.
3 contributing sites.
The Great Falls Portage is the route taken by the Lewis and Clark Expedition in 1805 to portage around the Great Falls of the Missouri River during the outbound portion of the expedition. The 18-mile (29 km) portage took 31 days. Two portions of the route, which have largely escaped development, are part of a National Historic Landmark District, designated in 1966 to commemorate this achievement.
(read more...)National Park Service documentation: https://catalog.archives.gov/id/71975568