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
Mountains of Azerbaijan peaks of the mountain range. The highest peak of the Greater Caucasus is Mount Bazarduzu, which is situated 14,652 feet (4466 meters) above the sea level, is also the highest point in Azerbaijan. The mountains of the Greater Caucasus are located in the region of high degree of seismic activity. The mountains are formed by rocks that date back to Jurassic and Cretaceous periods. The Lesser Caucasus is the second important mountain range in Azerbaijan and forms its south-western borders. Mount Murovdag and Mount Zangezur are the main ridges of the Lesser Caucasus. They are formed by sedimentary and volcanogenic