Stacy Marie Allison became the first American woman and the world's seventh to scale Mount Everest, the Ministry of Tourism said Friday.

The ministry, which authorizes Himalayan expeditions, said Allison, 30, reached the 29,028-foot summit at 10:38 a.m. Thursday, having followed the normal southeast ridge approach.The Portland, Ore., woman, who began her climb Aug. 22, was accompanied by Sherpa guide Pasang Gyalzen, 26, the announcement said. She was the first American woman and the seventh in the world to have conquered Everest, the world's highest peak.