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	Geo-Rant 128: Precambrian basics of the Black Hills (Steven Baumann) View
	Geo-Rant 130: Precambrian and Mt. Rushmore (Steven Baumann) View
	Geo-Rant 41: Color in Sedimentary Rocks (Steven Baumann) View
	Black Hills Institute (Jonathan Vandevoorde) View
	Treasure of the Black Hills (True Tales of Buried Treasure) View
	Proterozoic Horst in Ontario (Steven Baumann) View
	Finally Solving The Geological Riddle of Black Hill (OzGeology) View
	Sacred Hills: Discovering the Lakota Prophecy Hidden in the Black Hills (RAT Lab) View
	April 3- Science-Geology- Ch. 8 Earth’s Mighty Mountains (Alan Chambers) View
	Fossils of the Pierre Formation (ndparkrec) View