English: The Kali Gandaki Gorge separates the major peaks of Dhaulagiri (8,167 m or 26,795 ft) on the west and Annapurna (8,091 m or 26,545 ft) on the east. If one measures the depth of a canyon by the difference between the river height and the heights of the highest peaks on either side, the gorge is the world's deepest. The portion of the river directly between Dhaulagiri and Annapurna I (7 km downstream from Tukuche) is at an elevation of 2,520 m or 8,270 ft, 5,571 m or 18,278 ft lower than Annapurna I.[2] As tectonic activity forced the mountains higher, the river cut down through the uplift.