Keyword: cavern

At the Earth's Core

5.3

1976

Movie

HD

A Victorian era scientist and his assistant take a test run in their Iron Mole drilling machine and end up in a strange underground labyrinth ruled by a species of giant telepathic bird and full of prehistoric monsters and cavemen.

Into the Lost Crystal Caves

6.8

2010

Movie

HD

NGC goes inside one of the greatest natural marvels on the planet - a giant crystal cave described as Supermans fortress, with magnificent crystals up to 36 feet long and weighing 55 tons. A team of experts venture into the cavern, enduring scorching-hot temperatures that could kill a human after just 15 minutes of exposure. Theyll push the boundaries of physical limitation to explore a crevasse that could lead to another - and perhaps more spectacular - crystal cave.