It is situated on the south-west side the bay, 4 km from the wharf outside of Halong City. The way to Thien Cung cave is a perilous one, covered on both sides by thick forest. After entering a narrow gate, the grotto’s 130-meter-long girth opens up. Getting in we are astonished by the very animated and splendid beauty which is made from stalactite. On the east wall of the grotto, there is a grandiose and imposing picture with characters of heroic tales.
Going out of the Thien Cung Grotto, we have a sensation of just having seen a unique, meticulous, interesting fine-art museum which is made by nature, but the pictures are made out of the imagination, ability and intellect of man.
Thien Cung cave is recently discovered, one of the most beautiful grottoes in Halong Bay.
Legend has it that a beautiful young lady named May (cloud), caught the eye of the Dragon Prince and he fell in love with her. They were betrothed, and their wedding lasted seven days and seven nights in the very centre of the grotto.
In honour of the wedding, small dragons flew about through the stalactites and stalagmites, elephants danced together happily, snakes twined themselves around trees and two stone lions danced with their manes flowing in the wind. A large elephant, smartly dressed, waited for the bride and the groom. The genies of the south and north stars also came to attend the banquet, and the atmosphere was definitely animated and lively. All these scenes have been seemingly fossilized in the grotto.