The Pine Ridge Indian Reservation is an Oglala Sioux reservation located in South Dakota.
Originally included within the territory of the Great Sioux Reservation, Pine Ridge was established in 1889 in the southwest corner of South Dakota on the Nebraska border. Oglala County is the poorest county in the United States. The population of Pine Ridge suffers health conditions commonly found in Third World countries, including high mortality rates, depression, alcoholism, drug abuse, malnutrition and diabetes, among others. Many of the families have no electricity, telephone, running water, or sewage systems; and many use wood stoves to heat their homes, depleting limited wood resources.