Membartso (Dzonkha translation is Burning Lake) is more of a stream than a lake. The story goes that many years ago Pema Lingpa found some of Guru Rinpoche’s terma here. He was guided in a dream to the place where the river forms a large pool resembling a lake. On seeing a temple in the water he dived in and returned with a treasure. The next time he came he was followed by a big crowd with many skeptics. Forced to prove himself he took a lighted lamp in his hand and proclaimed that if he was false he would die but if he was true he would return with the lighted lamp. He returned with a statue, a treasure chest and the lamp still burning. The pool came to be known as Membartso or the Burning Lake. Good story, not so impressive of a like though.