Tucked into the northern Gorkha district near the Tibetan border, Tsum Valley remained closed to outsiders until 2008. Known locally as the "Hidden Valley of Happiness," it's one of the few places in Nepal where Tibetan Buddhist culture survives almost untouched by modern tourism — a land of mani walls, wind-worn chortens, and monasteries that still function exactly as they have for centuries. For trekkers craving solitude and depth over crowded trails, the Tsum Valley Trek delivers both in full
