Richard Hammond's Journey to the Centre of the Planet (2011)

Top Gear favourite Richard Hammond embarks on a fascinating journey to investigate how the earth's machine dominates the modern world around us. Illustrated through inspiring and commanding stories, Naked Earth uses state of the art technology to lift the lid on planet earth, and reveal a machine more complex than anything else in the solar system.

Viewed from space, the surface of our planet appears solid, unchanging... But this is an illusion. Every day there are at least 50 big earthquakes and 12 powerful volcanic eruptions. Every second the ground beneath our feet is on the move. By travelling to the centre of the Earth to reveal how the engine at its heart affects our lives, and draining the oceans to expose some of the hidden wonders driving our existence, Naked Earth reveals why geology is such an important part of our lives, whether we are aware of it or not. This is the planet as you've never seen it before.

The first episode of this enlightening series uses data collected by scientists around the world to travel to the centre of our planet, revealing the magnificent engine at its heart. Discover the surprising ways this machine affects our lives every second of every day and how what happens below ground is essential to life above ground.

The surface of our planet is nearly all ocean. In fact, 72% is hidden by water. New technology is revealing strange mysteries and dramatic landscapes we couldn't have imagined all hidden below the seas. These discoveries are changing our understanding of how the Earth works. The second episode sees Naked Earth drain these oceans. By travelling all the way to the very deepest point on Earth, the series reveals some of the biggest features on the planet and shows how these hidden wonders are driving our existence.

Please note - Disc special features are subject to change, may differ from format to format and/or may differ from region to region.