The Alpine destinations of North Sikkim includes the village of Lachung inhabited by the Lachungpas, an ethnic tribe of Tibetan origin. Beyond Lachung the Shingba Rhododendron Sanctuary, Yumthang Valley and Yume Samdong are in one direction and are excellent for scenic views of the landscape, rhododendrons, alpine flowers and natural hot spring. The other destination in North Sikkim includes the village of Lachen the base camp for mountaineering expeditions to most of the mountain peaks in Sikkim. Excursion beyond Lachen to Chopta valley and Gurudogmar Lake, one of the sacred glacial lake of Sikkim and Cho Lhamu, the source of river Teesta is subject to grant of permit by the Government of authorieties.