History:Simig ‘Sangag Duduling’ Monastery was founded by a Saint called ‘RalchhenWosel Dorje in 1843 A.D. He was a disciple of Palri Tulku Pema Wangyal of Tibet. He was a highly accomplished Yogi. He passed away at present Gangnam Tshamkhang six kms above Simik Gonpa.Later, this monastery  was said to have been re-constructed by Burmiok Tulku or Incarnate Lama of Burmiok who was recognized as a reincarnation of Ralchen Woser Dorje. 

Today, with the help of Government assistance, this Monastery is  well maintained and houses 85monks.The Gonpa belongs to the Nyingmapa sect and functions all the major buddhist ceremonies.