As you are walking on the main trail along the base of the cliff you will pass the big wall (tall cliff with little to no trees in front of it) keep walking all the way until you come to a boulder the size of a room. At this point there will be a faint trail to follow up through the talus field to the base of the cliff.
Browse More Classics in Main Wall
Mountain Project's determination of some of the classic, most popular, highest rated routes for Main Wall:
The Gong Show 5.9- Trad, 1 pitch, 100 feet
Rock Lobster 5.9+ Sport, 1 pitch, 100 feet
Wake and Bake 5.10b Sport, 2 pitches, 170 feet
Featured Route For Main Wall