You searched for: Place Hillsdale Remove constraint Place: Hillsdale Place North America Remove constraint Place: North America Place R1W, T5S, section 7, North slope of pit. About 80 km SW of Ann Arbor. Remove constraint Place: R1W, T5S, section 7, North slope of pit. About 80 km SW of Ann Arbor. Topic Asclepias Remove constraint Topic: Asclepias