Using state of the art technology, Richard Hammond's Journey to the Centre of the Planet lifts the lid on planet Earth, peeling back its layers to reveal a hugely complex machine unique in our solar system. At first glance, the surface of our planet appears solid and unchanging - but every day there are at least fifty big earthquakes and twelve powerful volcanic eruptions. Using the latest scientific information, we see what's happening beneath our feet and beneath the oceans in a way never seen before. Along his journey, Richard takes the plunge in Iceland, travels into the abyss off the coast of California and sets eyes on bioluminescent deep sea creatures in the depths of Monterey Bay.