61 Years ago today, 18/04/47 the British were responsible for the world's 'largest single explosive detonation' on Heligoland, in what seems to have been an attempt to destroy the entire island by setting off 4-7k tons of surplus ammunition. List of the largest artificial non-nuclear explosions - Wikipedia, the free encyclopedia This Torygraph article says they're reconstructing the Island: Island levelled by British to be whole again - Telegraph And mentions that the Explosion was to destroy military facilities there. As that sounds a little sketchy to me, and I've not yet turned up a solid explanation, does anybody know for sure what the intention was? I thought maybe beginning exploration of megaton explosions for nuclear work?, but that's pure speculation. Or just... because they could? Cheers, Adam.