The area just to the right, around the arete from the Oops Wall. Not climbed as often as other areas; no bolted anchors, no easy gear anchors. Two of the routes are over 5.10; the other two are 5.8-ish.
Leave upper parking lot from far end, walk through meadow and past stream, come to large clearing. See footpath straight ahead; follow path until it enters the woods, then angle off to the right - you're heading towards an alcove (giant dihedral) with a crevice at its apex and a large crack in the right wall. Cuckoo's Nest is the left wall of this dihedral.
Browse More Classics in Cuckoo's Nest
Mountain Project's determination of some of the classic, most popular, highest rated routes for Cuckoo's Nest:
It Ain't All It's Crack'd Up To Be 5.8 Trad, TR, 1 pitch, 60 feet
The Land of the Lost 5.11b X TR, 1 pitch, 70 feet
Featured Route For Cuckoo's Nest