Grandstaff Canyon in southern Grand County, Utah, drains into the Colorado River in Moab Canyon and is reached by a trail from Utah State Route 128. It is closely linked with Morning Glory Natural Bridge, a major landmark whose 943-foot span helps make the canyon well known. The canyon is named for William Grandstaff, a mixed-race cowboy who prospected and ran cattle there in the late 1870s before leaving the area in 1881. Its name changed repeatedly over time, from a racial slur to Negro Bill Canyon in the 1960s, and then to Grandstaff Canyon in 2017 after a contentious public debate over history, memory, and race.