Son Doong The world's largest Cave

Son Doong cave is more than 200 meters wide, 150 meters high, and approx 9 kilometers long, with caverns big enough to fit an entire city street inside them. It located in Son Trach, Bo Trach District, Quang Binh province, Vietnam. The cave was found by a local man named Ho Khanh in 1991 and was recently discovered in 2009 by British cavers, led by Howard Limbert.
Its nickname "Garden of Eden."
The World's Largest Cave That Has A Jungle And Waterfalls Hidden Deep Inside!
National Geographic presents The World's Biggest Cave, a TV special that gives us a close-up look at Son Doong, a huge recently-discovered underground labyrinth in Vietnam.
(Source:  Youtube)