Open Book (climb)

Open Book is a traditional climbing route at Tahquitz Rock, in Riverside County, California.^[1] Since the Yosemite Decimal System was developed at Tahquitz it is no coincidence that the first climb to be rated 5.9, Open Book, is also located at Tahquitz. In 1952, when Royal Robbins climbed it free, it was one of the most difficult free ascents in the country.^{[citation needed]}

Open Book
The first two pitches follow the obvious inside corner
Location	Tahquitz Peak, California, United States
Coordinates	33.7605°N 116.685°W / 33.7605; -116.685
Climbing area	Tahquitz Rock
Route type	Traditional climbing
Vertical gain	300 feet
Pitches	3
Grade	5.9 (5c)
First ascent	John Mendenhall & Harry Sutherland, 1947.
First free ascent	Royal Robbins & Don Wilson, 1952.