བདེ་ཆེན་ཕུག་ལྷ་ཁང་ནང་བཞུགས་མི་དགེ་བསྙེན་ཇག་པ་མེ་ལེན་་་སྐོར།

(#Thank you la=Khenpo Tshering)
Goenkhangs are usually built to house fierce protective deities—in this instance, the guardian spirit Geynyen, who was the tutelary deity of the Thimphu valley. Kuenga Sangay appointed him as the official protector of the Drukpa Kagyu teachings. Again according to Dorji and Ura, the placement of the tower was such that it "was built lying below the house where Dampa and Damtrul Loden Gyalpo lived and above the drubdeys [retreats for meditation]" (p. 6.) None of these ancillary buildings were built to the same standard as the fortified tower; hence, only traces of their foundations remain.
The co-option of Geynyen into the protector of the Drukpa was not a straightforward matter. Legend asserts that Kuenga Sangay had to subdue the entity and convert the god into a protector deity. According to Tsering, the spirit of Jagpa Melen (another name for Geynyen, meaning "Fire Fetching Brigand and Supreme Warlord" withdrew into a large stone known as the Thimphu, which means "Disappeared into the Stone."
Dechenphu Lhakhang festival (tshechu) is dedicated to Gay Ngyen Jakpa Melen, a powerful guardian deity of Bhutan.