Son Doong tops world's 10 greatest natural caves

Wonderlist describes Son Doong as the world’s largest cave, formed by the erosion of limestone underneath the mountains by the river water, and causing the ceiling to collapse, thus creating a huge natural skylights. 

"Though it is millions of years old, it was not until very recently that it caught the attention of the world", Wonderlist mentioned. 

According to Wonderlist, Son Doong cave hides a whole world inside it, with its own river, jungle and climate. Some of the world’s tallest stalagmites are found here.

The site stated that the cave has a large calcite wall called The Great Wall of Vietnam, behind which were found abnormally large cave pearls the size of baseballs. It is a popular tourist sport, now, with its vastness providing a humbling experience.

Son Doong Cave was surveyed by the British Royal Cave Research Association (BRCA) in 2009. With a volume of 38.5 million cubic metres, the cave is the largest natural cave in the world.

On April 30, 2013, Son Doong was recognised as the largest cave in the world by the Guinness World Records.