The Left Fork has a high concentration of great areas. The Riverside area is by far the most popular due to the number of easier problems. Parking can be an issue there since it's adjacent to the Big Joe area which also sees a lot of traffic.
Take a left at the split, following signs to Joe's Valley Reservoir.
Browse More Classics in Left Fork
Mountain Project's determination of some of the classic, most popular, highest rated routes for Left Fork:
Featured Route For Left Fork