The Son Doong Cave in Vietnam
Son Doong cave (in Vietnamese, meaning Mountain River Cave) is a cave in Phong Nha-Ke Bang National Park, Bo Trach District, Quang Binh Province, Vietnam. The cave is located near the Laos-Vietnam border and has a large fast-flowing underground river inside. The cave was found by a local man named Hồ-Khanh in 1991. However, not until 2009 was it made known to the public when a group of British scientists from the British Cave Research Association, led by Howard and Deb Limbert, conducted a survey in Phong Nha-Ke Bang. Their progress was stopped by a large calcite wall. The biggest chamber of Son Doong is over 6.5 kilometers in length, 200 meters high and 150 meters wide. With these dimensions, Son Doong overtakes Deer Cave in Malaysia, to take the title of the world’s largest cave. Deer Cave is 90 meters wide, 100 meters high and 2 kilometers long.
Credits: Blurppy, National Geographic, Son Doong Cave, The Telegraph.