Mysterious and ancient, Luobi Cave in Lizhigou Town about five km northwest of Sanya City is shrouded in unwritten history and enduring legend. The rock formation is located in the Liang Keng Slope of Litchi Furrow at an elevation of 110 m.

The cave itself is about 12 m high at its mouth, reaching to a height of about 22 m at its centre, where two pen-shaped stalactites hang from the roof. The cave and area are of significant archaeological significance.