The U.S. Supreme Court has denied Klickitat County’s claim to Tract D in the southwest portion of the Yakama Indian Reservation. The Court made the denial without comment, likely ending the over century-long dispute. Tract D is 121,465 acres including the eastern half of Mt. Adams and the Glenwood Valley. Klickitat County claimed the tract was not included in the reservation, noting ambiguous language in the Treaty of 1855 between the Yakama Tribe and the federal government.