Into Marble Canyon on October 8

Geologist Ivo Lucchita makes a point about Grand Canyon Geology. He would usually point out some things about the canyon each morning, and often there would be further discussion during the day. There'd be a hike to a point of interest, a walk up a canyon, or, in one case, a walk/climb up Carbon Canyon followed by an easier walk down Carbon Canyon to our camp. There's some spectacular geology up there. Ivo brought a goodly supply of maps and other teaching aids.

Ivo is the author of Hiking Arizona's Geology.