goes well beyond other instructional resources, both in scope and detail. Written by a true master of crack climbing, this book takes an engineer's approach to the mechanics of jamming and combines it with detailed, realistic illustrations. The result will have you climbing cracks with the finesse and efficiency that takes most years to master. The author, fondly known among his friends as "The Sender," has hundreds of first ascents of difficult desert cracks to his credit. Take advantage of his tremendous experience and the secrets he reveals, and you will soon be enjoying those cracks you now avoid.

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