
Tibet, averaging more than 4,000 meters above sea level, forms the main part of the Qinghai-Tibet Plateau and is well known as the "roof of the world." The Himalayas, ranging from east to west on the southern edge of the Tibet Plateau, run for 2,400 kilometers with an elevation of more than 6,000 meters. Mount Qomolangma is the world's highest peak with an elevation of 8848.13 meters. The Yarlungzangbo Gorge, at a depth of 5,382 meters, is the world's deepest gorge.