When Britain tried to blow up an island
Media playback is unsupported on your device
Video

Heligoland: The island Britain tried to sink

It is 70 years since the Royal Navy used thousands of tonnes of explosives on Heligoland in the North Sea.

Video journalist: Bruno Boelpaep

  • 18 Apr
  • From the section Europe
Go to next video: Watch 'mother of all bombs' test run