Breathtaking drone footage of the worlds largest cave Sơn Đoòng Cave (hang Sơn Đoòng, “Mountain River cave” in Vietnamese)

Take an otherworldly journey through Hang Son Doong, the world’s largest cave, by both ground and air. Filmed near the entrance and the first and second dolines (skylights) which are 2.5 and 3.5 km inside the cave respectively.