A Vietnamese farmer found a cave in the jungle. Little did he know its name, Son Goong, quite literally describes it: “Mountain River Cave.”
In modern times, the cave was first reported of in 1991. But it wasn’t until 2009 when British geological experts explored the cave and reported to the world what they discovered.
The cave is its own complete ecosystem of wildlife, rivers, forests, and even pearls.
The cave is 87 miles long and contains its own environment – animal life, trees, lakes, beaches, and a river.
The cave is rich in rare pearls that have been shaped by water drops for centuries.
Son Doon is part of the Phon Nha Ke Bang National Park, roughly 280 miles south of Hanoi.