‘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.