Heligoland, April 18, 1947: Preparations for one of the largest non-nuclear explosions in history are almost complete. The British want to raze the island to the ground with more than 6,000 tons of explosives - nothing should remind of the sea fortress with its air raid shelters and anti-aircraft systems, with the submarine bunker and naval port. The Heligolanders have been evacuated and are waiting with bated breath for the... see more