A collapsed and flooded complex of mining galleries stretches between 600 and 800 metres below the cyclocross World Cup 2025 course in the northern French town of Liévin.
With a new batch of wonder weapons, the so-called "Vergeltungswaffen", the Germans wanted to turn the tide at the end of World War II. They developed the unmanned V1 aircraft, the V2 rocket and the V3 super cannon.
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A collapsed and flooded complex of mining galleries stretches between 600 and 800 metres below the cyclocross World Cup 2025 course in the northern French town of Liévin.
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