Archaeological discoveries

What and how long is the worlds largest cave?

The world's largest cave is Sơn Đoòng Cave, located in Phong Nha-Kẻ Bàng National Park in Vietnam. It was discovered in 1991 by a local man named Hồ Khanh. The cave is estimated to be 5.5 miles long, 262 feet wide, and 490 feet high. The cave contains a river, a jungle, and a beach, and is home to a variety of plants and animals, including bats, birds, and frogs.