Bighorn River Wind River Canyon near the town of Thermopolis. From there, the river flows through the Bighorn Basin in north central Wyoming, passing through Thermopolis and Hot Springs State Park. At the border with Montana, the river turns northeast, and flows past the north end of the Bighorn Mountains, through the Crow Indian Reservation, where the Yellowtail Dam forms the Bighorn Lake reservoir. The reservoir and the surrounding canyon are part of the Bighorn Canyon National Recreation Area. The Little Bighorn River joins the Bighorn near the town of Hardin, Montana. Approximately fifty miles farther downriver, the Bighorn River ends where
Battle of the Little Bighorn Indians" last stand" in the area. Within 48 hours of the battle, the large encampment on the Little Bighorn broke up into smaller groups because there was not enough game and grass to sustain a large congregation of people and horses. Oglala Sioux Black Elk recounted the exodus this way: "We fled all night, following the Greasy Grass. My two younger brothers and I rode in a pony-drag, and my mother put some young pups in with us. They were always trying to crawl out and I was always putting them back in, so I didn't sleep much." The scattered