Mountain Madness interests. While leading Mountain Madness, Fischer became renowned for his ascents of the world's highest mountains made without the use of supplemental oxygen. Fischer and Wally Berg were the first Americans to summit Lhotse, the world's fourth highest mountain (27,940 feet / 8516 m), located next to Mount Everest. He and Ed Viesturs were the first Americans to summit K2, (28,251 feet / 8611m) in the Karakoram of Pakistan without supplemental oxygen. During his stewardship of Mountain Madness, Fischer led social and environmental initiatives to help people in the countries in which Mountain Madness traveled. As the leaders of the
Geography of Gilgit–Baltistan the district for all treks to Concordia, the confluence of the Baltoro Glacier and the Mount Godwin-Austen Glacier). The Biafo Glacier and a major part of the Hispar Glacier are also located in the Skardu District. The district also includes almost all of the Deosai National Park, which is located on the second-highest plateau in the world. (Only the Tibetan Plateau is higher). Skardu also is the district in which the Indus River enters Gilgit-Baltistan from the Indian state of Jammu and Kashmir. Other towns in the Skardu District include: The highest peak in the Skardu District is K2 (8,611