Manaslu Region Tsum Valley was a restricted area until it was opened for trekking in 2008 and there is a little information available on the area.

The Tsum Valley is a sacred Himalayan pilgrimage valley situated in northern Gorkha, Nepal. Literally “Tsum” means vivid. Against the majestic backdrop of the Ganesh Himal and Sringi Himal, and Boudha ranges, this serene Himalayan valley is rich in ancient art, culture and religion. The local people are mostly of Tibetan origin and speak unique dialect. Trails are strewn with artistic chortens and lined with mani walls made of thousands of stone slabs carved with drawings of deities and inscribed with prayers. The famous Kyimu Lung, a pilgrimage circuit in the central Trans-Himalaya, is well known for its center of learning and meditation. This circuit traverses the Tsum Valley the Manaslu area in Nepal, and southern parts of Tibet.

The Tsum Valley has long history of Buddhism. The Buddhist saint Milarewa is believed to be meditated in the caves of these mountains. Traditionally, the valley was a culturally distinct geographical called “Tsum Tso Chuksum”, which means thirteen provinces ruled as a single territory. The ancient remains of the Tsum Kingdom are still visible today. Due to its remoteness and inaccessibility, this sacred valley and its people have been bypassed by mainstream development for centuries. As a result, the unique culture of this valley has remained intact.

The valley is drained by the Shear Khola, which originates from the western glacier of Ganesh Himal and east and southern glaciers of Sringi Himal and meets the Budhi Gandaki at Nyak.

The valley is uniquely rich in wildlife, especially the Himalayan Thar and Blue Sheep which congregates in herds of 50 to 200. Hunting, fishing is not permitted in the Tsum Valley. The valley also boasts some unique and historic monasteries, including Rachen Gumba and Mu Gumba, which lie on a pretty plateau nestled in the lap of the valley, and Gumba Lungdang, situated at the base of a conical hill against the main slope of Ganesh Himal.