Ruled by the chieftain Angh, Shangnyu village is one of the prominent villages in Mon district. There is a wonderful wooden monument measuring 8 feet in height and 12 feet in breadth which has, it is believed, been constructed by divine angels. Numerous figures of human beings and other creatures are carved on it.

Memorial stones are also found in front of the Angh's palace. History records that good and friendly relationships existed between Shangnyu and the Ahom Kings. Shangnyu Angh used to collect taxes from all the villages under his domain-ranging from Sibsagar in Assam to the Wanchos in Arunachal Pradesh.