In rock climbing, an anchor can be any device or method for attaching a climber, rope, or load to a climbing surface—typically rock, ice, steep dirt, or a building—either permanently or temporarily. The intention of an anchor is case-specific but is usually for fall protection, primarily fall arrest and fall restraint. Climbing anchors are also used for hoisting, holding static loads, or redirecting (also called deviating) a rope.
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👉 Anchor (climbing) in the context of Climbing rope
A climbing rope is a rope that is used in climbing. It is a critical part of an extensive chain of protective equipment (which also includes climbing harnesses, anchors, belay devices, and carabiners) used by climbers to help prevent potentially fatal fall-related accidents.
Climbing ropes must meet very strict requirements so that they do not break in the event of an accidental fall. However, they also need to be light, flexible for knotting, and resistant to chafing over sharp and rough rocks; all that in all possible weather conditions. Although ropes made of natural fibres such as hemp and flax were used in the early days of alpinism, modern climbing uses kernmantle ropes made of a core of nylon or other synthetic material and intertwined in a special way, surrounded by a separate sheath woven over it. The main strength of the rope is in the core, and the sheath of the rope represents only a small fraction of the overall strength of the rope.
In this Dossier
Anchor (climbing) in the context of Lead climbing
Lead climbing (or leading) is a technique in rock climbing where two climbers work together to ascend a climbing route. The 'lead climber' — who is doing the climbing — clips the rope to pieces of protection as they ascend. The 'second' (or 'belayer') stands at the base of the route controlling the other end of the rope, which is called belaying (e.g. if the 'lead climber' falls, the 'second' locks the rope). The term distinguishes between the two roles and the greater effort and increased risk of the role of the 'lead climber'.
Leading a route is in contrast with the alternative climbing technique of top roping, where even though there is still a 'second' belaying the rope, the 'lead climber' faces no risk in the event of a fall and does not need to clip into any protection as the rope is already anchored to the top of the route (e.g. if they fall they will just hang from the static rope). Leading a climbing route is a core activity in rock climbing, and first ascents (FA) and first free ascents (FFA) of new routes must be done via lead climbing.
Anchor (climbing) in the context of Top roping
Top rope climbing (or top roping) is a form of rock climbing where the climber is securely attached to a climbing rope that runs through a fixed anchor at the top of the route, and back down to the belayer (or "second") at the base of the climb. A climber who falls will be held by the rope at the point of the fall, and can then either resume their climb or have the belayer lower them down in a controlled manner to the base of the climb. Climbers on indoor climbing walls can use mechanical auto belay devices to top rope alone.
By definition, top roping can only be done on routes that are less than half the length of a typical climbing rope, which means single-pitch routes that are below 25–30 metres (82–98 ft) in height. Top roping is also used in ice climbing, and the related sports of mixed climbing and dry-tooling, and it is used in combination with auto belay devices in both competition speed climbing and competition ice climbing.