The largest cave in the world - Hang Sơn Đoòng, Vietnam
Hang Sơn Đoòng, this is the largest cave in the world, located at Son Trach, Bo Trach District, Quang Binh province, Vietnam. Sơn Đoòng cave is more than 200 meters wide, 150 meters high, and approximate 9 kilometers long in Phong Nha-Ke Bang National Park.
# The Tour
If you would like to join a trek to Son Doong Cave, you can check dates and make a reservation with Oxalis Adventure Tours.