Drak Yangzom & Dzong Kumbum is an important Buddhist hermitage in Tibet and lies at 150Km from the capital city of Lhasa at an elevation of 4470 meters above sea level. There are two long large caverns, in which Guru Rinpoche and some other Yogi master had meditated. The natural caverns have a very long history and replete with bizarre rock formations, stalagmites, and stalactites.
There is a beautiful hiking route from the foothill of the nunnery up to Drak Yangzom caverns. The journey is about 4km hiking and it takes approximately 3 hours to hike up and 1/30hrs to get down. Besides, you will see a beautiful view of Yarlung Tsangpo valley with nunnery and village.
On the other side of the valley is Dzong Kumbum cave. The altitude of the site is about 4724m above the sea level, with a less narrow but much longer cave complex of several branches.
Dzong Kumbum is the main cave of Guru Rinpoche and Kadol Yeshi Tsogyal in the 8th century. There are three caves and the longest cave is almost one kilometre. Dzong Kumbum is one of the holiest sites in Tibet frequently visited by local Tibetans and tourists.