Ableman's Gorge, Rock Springs WI
Parfrey's Glen, Baraboo WI
Parfrey's Glen, Baraboo WI
Students approach the Great Unconformity, Freedom WI
Fault surface, Phi Kappa peak ID
Fault surface, Phi Kappa peak ID
Fault surface, Phi Kappa peak ID, featuring Olivia Thurston and Willy Guenthner