Baie d'Halong, Thien Cung grotto

Thien Cung is situated on the southwest side of the bay, 4 km from the wharf outside of Halong City. It is located in a small range of islands that resemble a throne embracing two superb grottoes at its core. The way to Thien Cung is perilous, covered on both sides by thick forest. After entering a narrow gate, the magnificent, 130 m long grotto opens up.