by Thuan Vu | Dec 14, 2019 | Event
About Sơn Đòong Cave Sơn Đoòng cave was formed by the Rào Thương river eroding away the limestone underneath the Annamite Mountains (Dãy Trường Sơn) about 3 million years ago. Sơn Đoòng is now considered the world’s largest natural cave up to date with the 5km length,...
