Pleasant little, out-of-the-way bouldering. Has a few good cracks, a few good face problems, and a few awesome hard problems (like the NFL dyno).
From the parking area below Walt's Wall, follow the trail towards the upper parking lot. After crossing the fence on a wooden staircase thing, continue about fifty yards further and turn left, angling for the rib of rock. Walt's Rib has three tiers (more or less) and Out of Site should be visible on the right side of the lowest tier.
Mountain Project's determination of some of the classic, most popular, highest rated routes for Walt's Rib: