With a system of thousands of years old stalactites and stalagmites, Tien Ong Cave is a magnificent cave with landscapes and a primitive charm like no other. Split into two chambers by a rustic looking stone pillar, the cave is only 5 meters above sea level, but 50 meters below. Archelogists have also discovered human bones and artefacts dating back to 10,000 BC - 8,000 BC.