With a depth of around 2,199 metres, a cave in Georgia is so deep that nearly seven Eiffel Towers could fit inside.

The three divers from Florida were exploring the cave as a group, officials said. Their identities have not been released. A medical examiner is working to determine the deceased diver’s cause ...

In 1960, Dale Green and his friends discovered and explored a cave in Utah. After having gone through its narrow turns and passages lined with clay, the texture of soft, brown putty, they named it ...

Deep inside a labyrinthine cave in southwestern France, ancient humans who lived around 30,000 years ago carved horses, mammoths and rhinoceros into the walls, a fabulous prehistoric menagerie ...