 Behind this there is a 7th-century meditation chamber that was used by Songtsen Gampo.The nunnery has a collection of thirteen Thangkas from Ming and Qing dynasties depicting Buddhas and Bodhisattvas.The 7th century Tibetan king Songtsen Gampo used to meditate at a natural cave in this location, and recited prayers to reduce the danger of flooding by the Lhasa River.