This is the foyer or warm up to the Playground.
Chinle formation. In Navajo country consists of (descending) : (1) Red shale and shaly sandstone; (2) lenses of limestone conglomerate containing red shale; (3) purple, lavender, green, and light-colored variegated shales with limestone conglomerate lenses; (4) chocolate-colored arenaceous shales, at base.