[Mile-marker 15]
Half a mile southwest of the parking lot is one of the narrowest
stretches of Rim Rock Drive at the edge of a Wingate cliff that actually
overhangs. But do not worry, it is well protected by a rock wall. At the
head of the canyon is a large jumbled landslide of the Morrison
Formation that has covered the cliff of Entrada Sandstone. Along the
narrow stretch and just beyond the landslide are excellent views on the
right of the erosional unconformity between the eroded surface of the
Kayenta Formation and the overlying Slick Rock Member of the Entrada
Sandstone, a view of which is shown in figure 15 and a discussion of
which is given on pages 35 to 39.