Trial by Cactus

This crack problem has edges that are so clean and crisp your fingers feel glued to the rock. Stand start with all tips in the crack as high as you can get them. Move straight up using the crack and the arête until you reach the top ledge. If you avoid the arête then it's a V5. The slight overhang on the lower half makes either variation pretty engaging.

Obvious finger crack on the face of the Opuntia Block. It can be seen from the road.

Pad and spotter.