|Drupthob Melong Dorji Drup Phug|
(retreat cave) at Sumthrang cliff
Sumthrang has been a monastic seat where retreat was the focus according to Sumthrang Chojey Lam Gyamtsho.
As you see around the cliff at the north, there are as many ruins of ancient retreat centers, where forefathers of Sumthrang Choje family led as many followers on retreat at these places. The cliff also houses a retreat cave of Drubthob Melong Dorji, the oral accounts has it that, the Drupthob flew from this cave.