You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Black Hills, between SD Hwy 85 & Spearfish Creek, ca 2 1/2 mi SW of Cheyenne Crossing. Remove constraint Place: Black Hills, between SD Hwy 85 & Spearfish Creek, ca 2 1/2 mi SW of Cheyenne Crossing. Topic Plantae Remove constraint Topic: Plantae