Twice each year in Wyoming, more than 300 pronghorn antelope travel 120 miles ore more, moving from summer grounds along the Snake River in Grand Teton National Park to winter range in the Upper Green River Basin.
Starting next month, the Buffalo Bill Center of the West in Cody, Wyo. will host an exhibition documenting how pronghorn use the 6,000-year-old route, which is one of the longest land migrations in North America.
