Guinea Pig

Climb up the crack/seam/corner line, making a few layback moves to pass the crux (good holds on the right settle this down a lot). Reach a good hold above a small overhang and pull up on a ledge. Scramble up stepped face, passing right of the pine tree. Clamber up on a ledge, traverse right 2m, and climb a left-facing, right-rising corner through a final headwall to easing slab. Belay at an oak tree.

This is the rightmost of the 3 crack lines running up the main face of the Laboratory Wall. It rises from lower right to upper left, reaching the pine tree ledge 5m right of the pine tree.

Standard Adk. trad rack. Pro is tricky; several hard moves require climbing with gear at your feet. If you climb to the top (~90'), rappel off a tree at the top. It is possible (and commonly done) to use a fixed anchor on a pine tree ~50' up; using this one can TR a few of the neighboring routes.