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
Oliphant v. Suquamish Indian Tribe a voluntary "Pilot Project" to allow certain tribes to begin exercising special jurisdiction sooner. On February 6, 2014, three tribes were selected for this Pilot Project: the Pascua Yaqui Tribe (Arizona), the Tulalip Tribes of Washington, and the Confederated Tribes of the Umatilla Indian Reservation (Oregon). Oliphant v. Suquamish Indian Tribe Oliphant v. Suquamish Indian Tribe, 435 U.S. 191 (1978), is a United States Supreme Court case deciding "whether Indian tribal courts have criminal jurisdiction over non-Indians." The Court held that they did not. The case was decided on March 6, 1978, with a 6–2 majority. The court opinion was