Open Book is a technical
rock climbing route at
Tahquitz Rock
Tahquitz Peak (pronounced , sometimes ) is a granite, rock formation located on the high western slope of the San Jacinto mountain range in Riverside County, Southern California, United States, above the mountain town of Idyllwild. Tahquitz ha ...
, in
Riverside County, California
Riverside County is a county located in the southern portion of the U.S. state of California. As of the 2020 census, the population was 2,418,185, making it the fourth-most populous county in California and the 10th-most populous in the Uni ...
.
Since the
Yosemite Decimal System
The Yosemite Decimal System (YDS) is a three-part system used for rating the difficulty of walks, hikes, and climbs, primarily used by mountaineers in the United States and Canada. It was first devised by members of the Sierra Club in Southern C ...
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
Royal Robbins (February 3, 1935 – March 14, 2017) was one of the pioneers of American rock climbing. After learning to climb at Tahquitz Rock, he went on to make first ascents of many big wall routes in Yosemite. As an early proponent of b ...
climbed it
free, it was one of the most difficult free ascents in the country.
References
{{reflist
External links
supertopomountainproject.com
Climbing routes