About eight miles west of Bluff, UT, US-163 cuts through a stunning monocline called Comb Ridge. This fold in the earth’s crust, developing 65 million years ago, is similar to folds we’ve seen and especially the Waterpocket Fold in Capitol Reef National Park. How do these rock folds develop? It is all about tectonic plates. What kind of plates? Let’s go . . .
