The gully to the south of the main Ed and Terry wall. The routes (with one exception) are on north-facing rock so shade is available until afternoon in the summer.
Getting There
From the parking lot start up the canyon, staying right on the pavement. When you see a low, blocky concrete structure on the left take the Ed and Terry trail that appears on the right and heads uphill. This deposits you at the south (uphill) end of the Red Slab.
Scramble up to the top of the Red Slab area using the fixed rope and then follow the right-to-left, upward sloping scramble to the base of the main Ed and Terry Wall. Travel uphill and south, scramble past a tree and head to a ledge above the west-facing rock in front of the main wall. Make a (slightly nerve-wracking) traverse south through a small gap into the gully.
Alternatively from the uphill end of Red Slab head west, then south and scramble up the gully itself. (I've only come down that way and don't like it as much as the way described above.)
The Classics
Mountain Project's determination of some of the classic, most popular, highest rated routes for Scenic Turnout: