Climbing is the activity of using one's hands, feet, or any other part of the body to ascend a steep object. It is done for locomotion, recreation and competition, in trades that rely on it, and in emergency rescue and military operations. It is done indoors and out, on natural and man-made structures. Guides, such as professional mountain guides, have historically been an essential element of pursuing the sport in the natural environment, and remain so today. Buy, sell and rent rock climbing gear with ReelTrail, whether it's new or used, or even vintage climbing gear.