Description
Sơn Đoòng cave, in Phong Nha-Kẻ Bàng National Park, Quảng Trị Province, Vietnam, is the world's largest natural cave.
ID: hang-son-oong-1753215201749-95ee96
Sơn Đoòng cave, in Phong Nha-Kẻ Bàng National Park, Quảng Trị Province, Vietnam, is the world's largest natural cave.