Rahul Gandhi, 48, the Indian Congress President, is embarking on the Kailash Mansarovar Yatra, the 12-day pilgrimage to Tibet’s holy mountain. Mount Kailash is 21,778 feet high and it, and the nearby Mansarovar lake, has religious significance to Buddhists, Hindus and Jains. The pilgrimage takes place every year between June and September.