World’s Largest Cave, Sơn Đoòng Cave, Vietnam

World’s Largest Cave, Sơn Đoòng Cave, Vietnam

Deep in the heart of Vietnam’s Phong Nha-Kẻ Bàng National Park lies an awe-inspiring marvel of nature—Hang Sơn Đoòng, the world’s largest cave. This giant cavern, discovered in 1991 by a local man named Hồ Khanh, was first thoroughly explored in 2009 by a team of...