a group of mountains in W South Dakota and NE Wyoming: famous for the gigantic sculptures of US presidents on the side of Mount Rushmore. Highest peak: Black Elk Peak, 2207 m (7242 ft)
Black Hills in American English
mountainous region in SW S.Dak. & NE Wyo.: highest peak, 7,242 ft (2,207 m)
Word origin
from their dark appearance, because heavily forested