Trivia: Where is the world’s largest known cave by volume?
Vietnam
U.S.
Saudi Arabia
Antarctica
The correct answer is Vietnam
So why is this answer correct? : Vietnam’s Han Son Doong is a labyrinth of dark caverns, coves, and subterranean rivers measuring approximately 1.4 billion cubic feet in total. The cave was first discovered in 1990 by a local man named Ho Khanh, but it wasn’t until 20 years later that he shared his discovery with a team of British scientists. The full extent of the cave system is still being explored to this day.