According to the Ortenburger guide, there are 14 distinct lines on the slabs directly below the S face of No Escape Buttress.  The rock doesn't look like much, but has some exceptional Yosemite-like friction climbing from 5.8 to 5.10-. 

The routes are all 150' to 190'.  Bring two ropes or just belay from above off of trees or your own anchors.  The easiest approach is around from the W, but there are ample ledges for a 4th-class circuitous approach from the E as well.

The obvious slabs below the huge S face of No Escape Buttress, which is the first chunk of rock up Leigh Canyon on the N side.

There are no anchors and just a few ancient star-drive bolts and pins. Some of the routes could be led with reasonable protection, but the highest-quality ones would be very runout without additional fixed gear.