VIENNA (AFP) - Austrian climber Gerlinde Kaltenbrunner became the first woman to conquer all 14 8,000-metre summits without artificial oxygen Tuesday, when she reached the top of the K2, her team announced. "Summit reached At 6:18 pm local time, Gerlinde reached the summit of K2," Kaltenbrunner's husband and frequent climbing partner Ralf Dujmovits said in an update on her website. Kaltenbrunner, 40, is the third woman only to climb all 14 highest summits but the first to do so without artificial oxygen. She had already attempted the 8,611-metre (28,251-feet) K2, on the border between China and Pakistan, six times before but had to turn back each time before the summit. On Tuesday, she was accompanied on her way to the top by the Kazakh climbers Maxut Zumayev and Vassiliy Pivtsov, and Darek Zaluski of Poland.