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How North Sea 'Atlantis' flooded

1 May 2014 Last updated at 13:48 BST

A prehistoric "Atlantis" in the North Sea may have been abandoned after being hit by a 5m tsunami 8,200 years ago.

The wave was generated by a catastrophic subsea landslide off the coast of Norway.

Analysis suggests the tsunami over-ran Doggerland, a low-lying landmass that has since vanished beneath the waves.

This animation reveals how this lost European landscape disappeared beneath the waves over the course of thousands of years.