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Dry-tooling (or drytooling) is a form of mixed climbing that is performed on bare, ice-free, and snow-free, routes. As with mixed climbing, the climber uses ice tools and crampons to ascend the route, but uses only rock climbing equipment for protection; many modern dry-tooling routes are now fully bolted like sport climbing routes. Indoor ice climbing competitions are held on non-ice surfaces and are effectively dry-tooling events.
Dry-tooling developed from the mid-1990s as the standards of mixed climbing rose dramatically, and the most difficult part of the new extreme M-graded mixed routes was often the dry-tooling component (i.e. a roof or severe overhang). Some of the most extreme mixed climbing routes now quote a D-grade alongside the M-grade to signify whether there was any ice encountered (i.e. Iron Man in Switzerland which is M14+/D14+).
Dry-tooling uses the identical equipment and techniques of mixed climbing and has followed its increased regulation of equipment to counter criticisms that it is a form of aid climbing. Dry-tooling has faced additional criticisms due to the damage it can do to natural rock surfaces, and dry-tooling climbing areas are usually separate from rock climbing areas. Dry tooling has been advocated as a more accessible sport for women.