The Cave World
Caves are expansive, and there are many that have still been undiscovered or unexplored. Thanks to curious scientific minds and research, we can at least study what we do know. Which brings us to this massive cave in Vietnam. The Son Doong Cave “is the largest cave in the world. Located in Vietnam, the 5km cavern is so massive that it has its river, jungle, clouds, and climate system.” It needs to be its own country! It was first explored and discovered in 2009. The “Great Wall of Vietnam” is a 90 meter calcite barrier located in the cave. There’s also a fast-flowing subterranean river in the cave. Every part of this cave is a call for adventure (via Bored Panda).