: The area is part of a vast, intact prairie ecosystem that supports movement for bison, bighorn sheep, and elk.
: Late spring through early autumn; summers can be extremely hot and dry. subtitle The Missouri Breaks
: The region's stark beauty was the namesake and backdrop for the 1976 Western film The Missouri Breaks , starring Jack Nicholson and Marlon Brando. Travel Planning Essentials : The area is part of a vast,
: Mile 149, the typical take-out point for full-length expeditions. Cultural and Natural Highlights Travel Planning Essentials : Mile 149, the typical
: The expedition passed through this area in May 1805. Visitors can see the same white sandstone cliffs and "extraordinary" geological features documented in their journals.
: While no permit is required for day use, overnight camping for boaters typically requires registration or small fees at developed landing sites.