Twin Buttes (Hidatsa: Idarúhxa Arucúhgaru Maa’ú’sh or cuuk gaamaaʔuush; Mandan: Tííru’pa Pshíí Wóónis) is an unincorporated community in Dunn County, North Dakota, United States. It is a community on the Fort Berthold Indian Reservation, which is home of the Mandan, Hidatsa, and Arikara Three Affiliated Tribes. Twin Buttes is south of Lake Sakakawea, and north-northeast of Halliday. References Unincorporated communities in Dunn County, North Dakota Unincorporated communities in North Dakota Mandan, Hidatsa, and Arikara Nation