Female mountaineers were rare in the early 20th century, and the maximum height attained by a woman lagged behind that claimed by male climbers. The first woman to climb extensively in the Karakoram was Fanny Bullock Workman, who made a number of ascents, including that of Pinnacle Peak, a subsidiary summit of Nun Kun, in 1906. Her claim on the women's altitude record was challenged by Annie Smith Peck in 1908 after she made an ascent of the north peak of Huascarán, which she claimed was higher than Pinnacle Peak. The ensuing controversy was bitter and public, and eventually resolved in Bullock Workman's favour when she hired a team of surveyors to measure the height of Huascarán. The north peak was found to be tall - some 600 m lower than Smith Peck's estimate.