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Big wall climbing is a type of rock climbing where a climber ascends a long multi-pitch route, normally requiring more than a single day to complete the climb. Big wall routes require the climbing team to live on the route often using portaledges and hauling equipment. It is practiced on tall or more vertical faces with few ledges and small cracks. == History == In the early 20th century, climbers were scaling big rock faces in the Dolomites and the European Alps employing free- and aid- climbing tactics to create bold ascents. Yet, the sheer walls were waiting to be climbed by future generation with better tools and methods. In addition many nations in the early 1900s had specialized army units that had developed wall climbing skills for gaining surprise entry into enemy fortifications by wall climbing. In the early 1900s the 'Filipino Scouts', an US Army unit composed of Filipino enlisted and American officers, demonstrated their specialized skills by climbing the steep walls of a Spanish era fortification in Manilla, then bested that demonstration by climbing the same wall again only bringing a battery of mountain howitzers this time to the top of the wall.〔("Soldiers of the Orient Experts in Climbing" ) ''Popular Mechanics'', December 1911, p. 838.〕 In the late 1950s big wall climbing finally started. In Yosemite, the northwest face of Half Dome was climbed in 1957 and the southeast buttress of El Capitan in 1958. With the invention of hard iron pitons, jumars and hammocks, wall climbing exploded in the 1960s and 1970s. Following those pioneering achievements, parties began routinely setting off prepared for days and days of un-interrupted climbing on very long, hard, steep routes. The food, water, hardware and shelter necessary for such a climb could easily weigh well into the hundreds of pounds. Hauling systems were developed for managing these large loads. In the last few decades, techniques for big wall climbing have evolved, due to greater employment of free-climbing and advances in speed climbing. The routes that used to routinely take days can be climbed in under 24 hours. Nevertheless, many parties still do make multi-day ascents of classic "trade routes" which have recently gone mostly free and very fast. Only a small handful of elite and exceptionally well-prepared climbers are capable of feats such as free-climbing the entirety of most classic Grade VI routes, or of speed-climbing such routes in a matter of hours. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Big wall climbing」の詳細全文を読む スポンサード リンク
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