Ox Bel Ha, located beneath Mexico’s Yucatán Peninsula, has officially reclaimed its title as the longest underwater cave system in the world, stretching an astonishing 524 kilometers. This submerged ...

The deepest caves on Earth are still being studied by scientists. They are unique environments created over millions of years ...

Tiny shrimp keep a hidden cave ecosystem alive beneath Mexico’s Yucatan Peninsula, where life survives without sunlight.

Human remains found deep inside a cave in Mexico date back 10,000 years, offering new clues about early burial practices in ...

A skeleton beleived to date from 16-17th century and discovered during the Crossrail excavations at Liverpool Street is seen in the Dockland Museum's 'Tunnel' exhibition in London on February 8, 2017.

This extraordinary animal supports a secret subterranean ecosystem.

The cenotes of the Yucatán Peninsula have held this secret for millennia - and a cave diver just brought it to light.