State of South Dakota
The Black Hills are a mountainous region in the upper-mid/western United States. They are situated in western South Dakota and northeastern Wyoming. The average elevation of the region, which occupies an area of about 6000 sq mi (15,500 sq km), is about about 4000 ft (1219 m). Harney Peak (7242 ft/2207 m) in South Dakota is the highest point. To the northeast of Harney Peak is Mount Rushmore (1745 m/5725 ft), also in South Dakota, site of the Mount Rushmore National Memorial. The region is drained by the Belle Fourche and Cheyenne rivers. On the slopes of the Black Hills are heavy stands of timber, mainly conifers. Nearly 1900 sq mi (4921 sq km) of the forested areas are preserved as a national forest. The region is one of the richest gold-mining districts in the U.S. and contains a wide variety of other mineral resources, including silver, lead, copper, tin, iron ore, coal, petroleum, salt, mica, and gypsum.