To my right (left side of the picture) is the Inner Gorge where the Colorado River continues cutting ever deeper. The Tonto mesa (below my right hand) is 1,200 ft above the Colorado and sits at the date juncture when life began on earth some 2,000,000,000 years ago. There is no fossil record below the Tapetes layer on which the Tonto runs. Looking into the Inner Gorge at the Colorado, which we will do... up close and personal tomorrow... is pretty spectacular.
To Hal's left (stud in gray shirt) is the other fork of this U-shaped mesa. Our route down is over there but just off-picture. Note the Redwall on that side... it isn't much different than what we just experienced. You'll see when we get there...