Little Bighorn River Canyon trail was originally established for the purposes of delivering mail to Bald Mountain City, a gold mining town, in the late 1800s. The trail is now primarily used by cattle ranchers, marathon runners, and fisherman. After flowing out of Wyoming and into Montana at the mouth of Little Bighorn Canyon, the entire remaining course of the Little Bighorn River and all its tributaries are within the boundaries of the Crow Indian Reservation, and access to the river is subject to the unique and confusing mixture of Montana state and Crow tribal law. Fishing within the boundaries of the Crow
Bighorn sheep both indicated on Clark's map and did retain their names, the latter being the namesake of the Battle of the Little Bighorn. Bighorn sheep The bighorn sheep ("Ovis canadensis") is a species of sheep native to North America named for its large horns. These horns can weigh up to , while the sheep themselves weigh up to . Recent genetic testing indicates three distinct subspecies of "Ovis canadensis", one of which is endangered: "O. c. sierrae". Sheep originally crossed to North America over the Bering land bridge from Siberia; the population in North America peaked in the millions, and the