The curving corner on the left is P2 and parts of ...
Large wall right of the Cheeks and above Duck Wall.
1) Hike the Upper Wall trail, then follow the trail right along the base of the Cheeks. Cross the gully to the Diamond.
2) Hike up to Duck Wall at Lookout Point, then either do a route to its top or follow the gully on its left side. This gully generally has water rushing down until mid-summer, but one can skirt along its right edge at the bottom, then cross to the left side midway up.
3) Hike to the top of Lookout Point, then skirt left (southwest) along the top of Lookout Point and Duck Wall.
Early in spring when the gully is full of water, route 1) is probably best for the Diamond; otherwise taking the gully in 2) is easier and faster.
But for the Collegium, route 3) is probably fastest at all times of year.
I found a Evolve shoe at the base of centerfold. Did anyone drop one off the wall ? Or is this one of Daryl's shoes ? I found it when I was hiking to the top of Duck wall at the point were you pass Centerfold.