A black and white photo of three slabs of ripple marks. A ruler is on top of the slabs for measurement.
black and white photograph
© University Archives, Fort Hays State University
Digitized by Forsyth Digital Collections
Sternberg, George Fryer 1883-1969, "089-01: Slabs of Ripple Marks" (2021). George Sternberg Album #2 - Early Canadian Views. 357.