But Dark Star, with so many areas still to survey ... Mark Synnott inches his way through a narrow tunnel in the cave system. Watch him navigate the shaft. Just inside the entrance, Tonya ...

We’re squatting around the fire just inside the entrance to Hang En, the mile-long portal that tunnels ... the cave that are all white, which is common for creatures that live in the dark.

T he Batu Caves, just a short ride from Kuala Lumpur, Malaysia, are a must-see destination that combine an Instagram-worthy ...

Find out what it takes to plunge into the dark and mysterious world of underwater ... spaces can be tightly enclosed and twisting tunnels are complex to navigate. But the expertise of cave divers make ...