Arthur Williams makes a journey by air across Peru, passing through deserts, mountains and jungles. He investigates new theories concerning the origins of the Nazca lines, 2000-year-old lines etched into the desert sands that some believe were created by aliens, but may actually be a map showing the location of underground water sources. He makes a risky landing in a canyon to explore a gold mine and visits a community of floating houses designed to survive the dramatic rise and fall of the Amazon. Last in the series Read more at http://www.tvguide.co.uk/episodeguide.asp?title=Flying+to+the+Ends+of+the+Earth#ms8gcVCLfDJfEkFx.99