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Open Book

Open Book

Open Book

Page Type: Route

Location: California, United States, North America

Lat/Lon: 33.76000°N / 116.682°W

Object Title: Open Book

Route Type: Technical Rock Climb

Time Required: Half a day

Difficulty: 5.9

Route Quality: 
 - 5 Votes


Page By: alexamies

Created/Edited: Nov 11, 2005 / Nov 11, 2005

Object ID: 167528

Hits: 35971 

Page Score: 72.08%  - 2 Votes 

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Hike from the Humber Park parking lot up along the Ernie Maxwell Trail. Turn left onto a use trail after about 5 minutes. This goes up to lunch rock. At lunch rock turn right and go along the rock past the lowest point of the rock to a huge diahedral separating the west face from the south face. This is the Open Book. It starts on a sloping slab under a small overhang.

Route Description

This is a classic route. Climb the overhang and head up the dihedral, past a piton, to an alcove (belay 1). The 5.9 crux is at the top of the the first pitch. Keep going up the diahedral in a sustained 5.8 pitch to another alcove, belay 2. Follow the dihedral up for a third pitch of easier climbing (5.7) to a ledge, belay 3. Climb another 30 feet or so to the top of the dihedral, left around an overhang onto 4th class slabs above, belay 4.

Essential Gear

A set of cams to 4 inches and some large stoppers.

Miscellaneous Info

If you have information about this route that doesn't pertain to any of the other sections, please add it here.


Alex belaying me up Pitch 3...Climbing the second pitch of...Greg tucked into the alcove...Open Book, pitch 2.Open Book... pitch 1.