You searched for: Place Black shale hills 1.5 mi. S. of Hwy 160 on road to Arboles, just e. of Chimney Rock. Remove constraint Place: Black shale hills 1.5 mi. S. of Hwy 160 on road to Arboles, just e. of Chimney Rock. Place Colorado Remove constraint Place: Colorado Place North America Remove constraint Place: North America Topic Aristida Remove constraint Topic: Aristida Topic Plantae Remove constraint Topic: Plantae Topic Poaceae Remove constraint Topic: Poaceae