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Lukhang (Tibetan: ཀླུ་ཁང, Wylie: klu khang, residence of Nagas), formally Dzongyab Lukhang (Tibetan: རྫོང་རྒྱབ་ཀླུ་ཁང, Wylie: rdzong rgyab klu khang), residence of Nagas, lords of the castle and administered territory [?]) is the name of a secret temple of Lozang Gyatso, 5th Dalai Lama. Three walls of the temple are covered with murals of yogis engaged in their exercises.
The temple is situated on a small island on a lake behind the Potala palace in Lhasa.