Geology is fascinating to a laymen like myself.
We were recently in New York, and we took a tour of the Ausable Chasm. I was luck enough to be standing next to a PCA member that is a retired geologist.
See the bridge at the top of the photo? That is the brisge we walked across.
My phone said we walked 3.7 miles and ascended 10 flights of stairs. Going down is easy, gravity is a witch going back up.