As the name implies, the crux of the route is the exit to the anchor. If the anchor was at the lip, the route would likely be rated 5.11.
Slabby, runout edge climbing on 5.7ish terrain to the way-high (15') first bolt leads to 5.10ish climbing up to the hard, overhanging finishing headwall. The crux is pulling over the top to the very highly placed anchors.
This route doesn't see much traffic and tends to stay very dirty because it's a natural rain run-off line.
Location
Bolted line in the middle of the face left of the Cholla Wall face route. The steep, overhanging headwall at the top is obvious. Shown as route number 7 on the Overlook route topo photo.
Protection
5 bolts to bolted anchor. The overhanging crux is very well protected. Watch out for the z-clip!
Don't bother TRing this (at least, without draws on the bolts to keep you in line). If you fall near the crux, you can't get back on. So you have to be able to link all the crux moves, in which case you should be leading it anyways :-)