Breaks Interstate Park spans southeastern Kentucky and southwestern Virginia at the northeastern end of Pine Mountain in Jefferson National Forest. Jointly managed by Kentucky and Virginia under an interstate compact, it is one of only two U.S. interstate parks operated this way. Its central feature is Breaks Canyon, a five-mile gorge carved by the Russell Fork River over millions of years, reaching depths of about 830 to 1,600 feet and long called the Grand Canyon of the South. The area was once hunting ground for Shawnee and Cherokee peoples, and Daniel Boone passed through in 1767 and is credited with naming the Breaks.