The first-of-its-kind habitat is teeming with never-before-seen life-forms, including strange species of worms, snails and deep-dwelling octopuses. The ecosystem, nestled beneath hydrothermal ...

In Maya mythology, caves and sinkholes were the gates to the underworld Xibalba and played an important role in religious rites. Now geologists discovered a large natural cave beneath the pyramid ...

A large cave in Israel was seen as a 'portal to the underworld' by a bizarre cult during the Roman era, a new study claims. Archaeologists have analysed artifacts taken from the Te'omim Cave in ...