Unknown2018-12-142018-12-141955EPM-068-06-001http://hdl.handle.net/20.500.11867/14902Single 8.5 x 9.5 inch sheet. Printed recto and verso. Date est.Issued by the Washington State Parks and Recreation Commission, this pamphlet tells of the geology that made the area and also the Indian petroglyphs that decorate rocks on display in the museum.Government documents