Vietnam caves among world
Update: 13/01/2021
The British Cave Research Association (BCRA) have ranked two caves in Viet Nam as the largest and third largest in the world.
They are Sơn Đoong and En in the Phong Nha-Ke Bang National Park in Quang Binh Province. Sơn Đoong also set a Guinness record as the world’s largest natural cave in 2013.