4-th episode of 50-th season "Horizon"

What "Horizon" 4-th episode about

For many centuries humans have dreamt of reaching the centre of the Earth. Scientists are bow uncovering a strange and alien world that lies 4,000 miles beneath the ground.

Episode number: 4

Episode name: "The Core"

Episode release date: 31 august 2011 at 21:00

Status: aired