A series of four peaks in the Karakoram Range of the Himalaya Mountains in northern Kashmir. Gasherbrum I is the highest, at 8,068 m (26,470 ft), although Gasherbrum IV, 7,925 m (26,000 ft), has been called more difficult than Everest for mountain climbers. The other two peaks are 8,032 m (26,352 ft) and 7,952 m (26,089 ft) high.