Italian physicist and photographer Alessandro Cerè took a break from work at the Centre for Quantum Technologies in Singapore to venture into Hang En and Hang ... In a cave there’s no way ...

After the first day of trekking, the team set up camp in the vast opening of Hang En cave. If you look closely, you can see rows of tents on the sand bank. This gives some idea of the immense ...

Take an otherworldly journey through Hang Son Doong, the world's largest cave located in Vietnam. The cave is more than 500 feet tall, 650 feet wide, and 29,500 feet long. Video courtesy of Ryan ...

It was in this environment, deep in the caves at the base of a mountain in Na Hang Nature Reserve ... completely devoid of light – of Khuoi Lin Cave and Na Mang Cave, according to a study ...