This Manilakhang is located at Mon Rongong village, North Sikkim. It is said to have been founded in 1909 A.D. by the area public to offer Mani prayer. It is one of the oldest Manilhakhang in North Sikkim. The Altar contains the statues of Shakyamuni Buddha, Chuchig Shay Cherezig and Guru Rinpoche. Presently there are 15 monks. It follows Nyingmapa Sect and affiliated to Phensang Gonpa.