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ClimbingClimbing is going up, or, depending on context, also down. It may refer to aircraft, a land vehicle, and humans and animals. On land, in particular it refers to steep climbs, e.g. on a hill, mountain or stairs, in a pole or tree, etc.Climbing without a vehicle is often done as a sport or recreation. Often the emphasis is on balance and agility over brute force. Climbing can take place outdoors on real rock faces, or indoors[?] on synthetically constructed climbing walls. Shorter climbs can often be done with anchors and rope that are placed at the top[?] of the climb before the climbers ascend. This type of climbing is called "top-rope" climbing. Longer climbs are normally done placing safety anchors during the ascent. This method is called "lead" climbing. To make lead climbing safe, climbers will often climb in pairs. The leader will climb first climbing up and placing protection as they go. When the leader has finished the route the other climber in the pair, the second, will climb and will remove the protection that the leader placed. Nearly all climbers follow the known climbing routes that are described in guidebooks[?]. The most experienced and adventurous will attempt to establish new routes and make the first ascents of them. Categories by type of terrain
Categories by use of protection
Styles of climbing outside
Competitions are usually held indoors on purpose built climbing walls. There are two main categories. As an additional handicap, a climber may have to climb a route on sight. This means he isn't allowed to see other climbers try to climb the route, and has only a limited amount of time to visually inspect the climb from ground level.
There are different ranking systems for climbing. One of the most popular is the inofficial 8a.nu. It's based on outdoor climbing and is a worldranking, but it has it's roots in Sweden. It's mainly a sport climbing[?] and bouldering ranking, and is often referred to as the official ranking system among sportclimbers[?]. Climbers grade the routes they climb. The grading system used varies from country to country (and region) and according to what style the climb is. See also Grading a boulder. See also: List of climbers whose precise nature is not known, whether plant or animal; 'Lingula',
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