P-Wall is a prominent rock face on Bishop Peak that can be seen from many places in town. The wall has a large white "P" painted on it. For rock climbers, the wall features some of the best multi-pitch trad climbing in SLO.

The P painted on the rock was originally painted in 1925 by Cal Poly students led by Walter P. Lumley. The P was repainted in 1947 and and again in later years.1

1. "The Bishop Peak P." by Cali Vance, Feb 2, 2018.