Gangrenboqi Mountain is the most famous holy mountain in Tibet

  Mount Kailash is considered holy by Hindus, Buddhists and Jains. In ancient texts, it is referred to as the center of the world. The reason can be understood from the geographical significance of it's place: within 30 miles radius, are the sources of mighty rivers Indus (north called "Sindhu" in India), Sutlej (in west), Brahmaputra (Yarlung Tsang-po in east), and Karnali (largest tributary to the Ganges in south).

  For the people of Tibet religion is highly important, and has a deep influence over all aspects of their lives. The dominant religion there is Tibetan Buddhism. Tibetan people worship snow-capped mountains, lakes and the color white. They believe that in snowy areas there is divinity in every mountain and a dragon in each lake, and that even the rocks have a spirit. They think that by circling around the sacred mountains and lakes, their sins can be cleansed and hopefully they can reach nirvana. For them, pilgrimage is the journey from ignorance to enlightenment. Because of this belief, pilgrims can be seen throughout the year circling around the sacred mountains and lakes. While on pilgrimage, most of them walk, but there are some pilgrims who are so devoted that they prostrate themselves at intervals along the way. They chant their prayers while walking and prostrating themselves. A pilgrimage takes scores of days, some even longer than a year.
  Gangrenboqi Mountain is the most famous holy mountain in Tibet, which is reputed as the center of the world by Tibetan Buddhism, Hinduism, Jainism and Bon.