Flashback

Climb halfway up the first pitch of Open Book to a obvious right facing arch 10a, which curves up and right. From here move up and right onto the face which share the belay for ZigZag and Mechanic's Route. At the start of the second pitch mantle an overhanging block on the left to a thin corner 10d, which leads to face climbing past 3 bolts up to the last belay of Open Book.

Between Open Book and ZigZag

Lots of thin to four inch.