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Retro-bolting
Retro-bolting is a term used within the rock climbing community to refer to the addition of new bolts to an existing climb. Retro-bolting can be contrasted with re-bolting, which is the replacement of existing bolts on a climb with new bolts.
There are many ethical issues relating to retro-bolting which can divide climbers into two camps, those for and those against.
==Background==
New climbing routes are produced by a First Ascentionist (FA) scoping out an unclimbed line, deciding to climb a certain section of rock and ultimately climbing it. Typically this first person then gets to name the climb and give it a grading. The route is then generally recorded in a guidebook for posterity. The climb is defined by the style that this person did the climb in, that is, how much protection did they use, was it traditional, did they use bolts or was there a mix of both.
Climbing ethics dictate that a climber should attempt to complete the climb in the same style as the FA, or better. This means that they should use the same type of protection without adding any extra bolts. Retro-bolting is the act of adding additional bolts to a climb that the first ascentionist never needed/added hence making the route either easier or less dangerous.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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