Sitting Bull Falls in springs further down the canyon or joins the Pecos Valley underground water supply. The area around Sitting Bull Falls is the remnant of a reef system known as the Capitan Great Barrier Reef dating from the Permian period. Approximately 250 million years ago, the region was located near the edge of an inland sea. The origin of the name Sitting Bull Falls remains uncertain. One version holds that the falls were named after a Sioux medicine man. The Apache name for the area was gostahanagunti which means "hidden gulch". A number of hiking trails allow visitors access to the
Sitting Bull the world. Two weeks later, after waiting in vain for other members of his tribe to follow him from Canada, the Army transferred Sitting Bull and his band to Fort Yates, the military post located adjacent to the Standing Rock Agency. This reservation straddles the present-day boundary between North and South Dakota. Sitting Bull and his band of 186 people were kept separate from the other Hunkpapa gathered at the agency. Army officials were concerned that he would stir up trouble among the recently surrendered northern bands. On August 26, 1881, he was visited by census taker William T. Selwyn,