It is said that Moenangsa Chorten of Khangma village under Pemagatshel District was built by Gyalpo Namgyal as per the prophecy given by fairy and it was sponsored by Jadrung. It is called also called as Gomang Chorten. It is said that rocks of the Chorten was introduced by fairy. Gyalpo Namgyal could not collect the good rocks. He had starts the base with weak rocks and worried about rocks. In midnight fairy came to his house and said, "Don’t worry about rocks, follow me, there is a brightening light on three stones of the rock". Then he followed the fairy and found out three stones with brightening light on the rock. He digs out the rock and got lots of rocks and he felt it is enough for two chorten. Then stopped producing rocks from it and while constructing it was not sufficient for now we can see around the neck of the chorten had built with ordinary rocks. At present, it is well cared by people of Khangma.