Longhong Cave (Dragon Pool Cave)
It is also called Cave of Goddess of Mercy or Cave of Leading to the Sky. In the vault of the cave, looking upwards towards the north, one can see a crack through which a thread of skylight penetrates, hence, the famous "A Thread of Sky". Two stone carvings at the entrance, "Master Tsuantsang Treturaning toe the East" and "the White Horse Carring Buddhist Sutras", are typical sculptures of the Song Dynasty(960AD-1279AD).
