Located to the south of Tuong mountain, the 250 million year-old complex consists of a 200m dry cave and a water cave.
Thien Ha has been well-known as a “living” cave. According to experts, geological layers in the cave are still active and developing silently.
Archaeologists have found many traces of mollusks, hewing tools, raw ceramic fragments, animal bones, turtle shells and bibs, and many other elements that confirm the existence of ancient Vietnamese residents.
The Thien Ha cave complex was found in 1997 by Ha Huy Loi, who was very interested in exploring the caves.
With the permission of local authorities, Loi has mobilised human resources and sucked out the mud to reveal a cave complex with majestic stalactites and underground rivers.