Sci. Ch. - What on Earth? Series 3 (2016-2017) Part 12 Grand Canyon of the Arctic

What on Earth? Series 3

Eyes in the sky. Watching us from space. Hundreds of satellites showing us the world like we've never seen it before. Capturing images which are breathtaking but bizarre. Objects and phenomena which defy explanation. Baffling phenomena seen from space, what on Earth are they?

Part 12 Grand Canyon of the Arctic

New evidence reveals a massive Arctic canyon buried beneath the ice; a mysterious island suddenly appears off the coast of the highly sensitive border between Iran and Pakistan; a plane is spotted on Google Earth at the bottom of a lake in Minnesota.

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