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Tom Frost is a rock climber from California, best known for big wall climbing first ascents in Yosemite Valley. He is also a photographer and climbing equipment manufacturer. ==Rock climbing and mountaineering== Frost graduated in engineering from Stanford University in 1958 and was a member of the Stanford Alpine Club.〔(【引用サイトリンク】title=No Guts, No Glory: A History of the Stanford Alpine Club )〕 Frost began making first ascents in Yosemite in 1958. In 1960, he made the second ascent of The Nose on El Capitan in Yosemite Valley, a route pioneered by Warren Harding in 1958. He climbed with Royal Robbins, Chuck Pratt and Joe Fitschen. In 1961, Frost and Yvon Chouinard visited the Grand Tetons, and made the first ascent of the northeast face of Disappointment Peak, YDS IV, 5.9, A3. On September 12, 1961, Frost, along with Robbins, began the first ascent of the Salathé Wall on El Capitan, named for pioneer Yosemite climber John Salathé. The pair spent two days establishing the first 600 feet of the route, and then retreated to the valley floor, where they met up with Chuck Pratt, with whom they spent several more days pushing the route to 1,000 feet above the valley floor. Once again, the climbers descended and resupplied. On September 19, they resumed the climb, and after days of intense vertical aid climbing they reached the Roof, a 15-foot overhang. Using pitons, Frost led this key section of the climb, and on September 24, the trio reached the summit. It had taken them a total of 11 days and 36 pitches of vertical climbing to finish the route, which is rated YDS VI, 5.10, A3. In 1963, he visited the Himalaya with Edmund Hillary, making the first ascent of Kangtega, and helping with the construction of a school and a hospital for the Sherpas. From October 22–31, 1964, with Robbins, Pratt and Chouinard, Frost made the first ascent of the North America Wall on El Capitan, YDS VI, 5.8, A5. Robbins described this climb in the 1965 ''American Alpine Journal'': "The nine-day first ascent of the North America Wall in 1964 not only was the first one-push first ascent of an El Capitan climb, but a major breakthrough in other ways. We learned that our minds and bodies never stopped adjusting to the situation. We were able to live and work and sleep in comparative comfort in a vertical environment." Of this climb, Chris Jones wrote, "For the first time in the history of the sport, Americans lead the world." In 1968, Frost visited the Cirque of the Unclimbables in the Northwest Territories of Canada. From August 10 to August 13, along with Jim McCarthy and Sandy Bill, he made the first ascent of the vertical southeast face of the 2,200-foot granite pillar named the Lotus Flower Tower, YDS V, 5.8, A2.〔Roper, pp. 98–103〕 This has been called "one of the most aesthetically beautiful rock faces in the world". In 1970, he participated in the Annapurna South Face expedition, reaching 25,000 feet. In 1979, he reached the summit of Ama Dablam on a filming expedition. In 1986, he returned to Kangtega and climbed a new route with Jeff Lowe. From 1997 to 2001, he returned to Yosemite big wall climbing with his son Ryan, repeating the Nose, the North America Wall and finally, the Salathé Wall on the 40th anniversary of his first ascent. 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「Tom Frost」の詳細全文を読む スポンサード リンク
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