Palha Lu-puk (next to Drubthub Nunnery) is an atmospheric cave temple said to have been the 7th-century meditational retreat of King Songtsen Gampo. The main attraction of the cave is its relief rock carvings, some of which are over a thousand years old, making them the oldest religious images in Lhasa. Altogether there are over 70 carvings of bodhisattvas here; the oldest images are generally the ones lowest on the cave walls. Songtsen Gampo is depicted on the west side.
The yellow building above the Palha Lu-puk is a chapel that gives access to the less interesting meditation cave (drub-puk ) of King Songtsen Gampo’s Chinese wife, Princess Wencheng.
