Photograph, Morrill Geological Expedition, 1895.

PINE RIDGE

North face of Pine Ridge at Warbonnet canyon looking north across the Hat creek basin toward the Black Hills outlined in the distance. The pine covered cliffs are Arikaree formation. The white Patch in the distance is the Brule clay of the Little Bad Lands, Sioux county, Nebraska. Beyond the Brule clay the Pierre formation begins.