Columbia Boulder is a 30-foot-tall (9.1 m) boulder located in Camp 4 at Yosemite National Park. It is the largest boulder in Camp 4 and easily seen from the campground. According to Mike Borghoff, there are no easy bouldering problems on Columbia Boulder.[1] There are several bouldering problems on Columbia including the iconic Midnight Lightning.[2] Other famous routes on the boulder include: Robbins Eliminate, named after Royal Robbins; Bates Problem, named after Barry Bates; and Ament Arête, named after Pat Ament.[2] In attempts to improve relations between climbers and park rangers, discussions over free coffee usually take place once a week from spring to autumn beside Columbia Boulder.[3]
- ^ Steve Roper (1994). Camp Four. The Mountaineers Books. p. 151. ISBN 9781594852824.
- ^ a b John Sherman (1994). Stone Crusade: a historical guide to bouldering in America. The Mountaineers Books. pp. 102–106. ISBN 9780930410629.
- ^ Paul Whitfield (2011). The Rough Guide to Yosemite, Sequoia & Kings Canyon. Penguin. p. 140. ISBN 9781848369016.