Die Glocke. His appearance was similar to a huge bell and was able to defy gravity and even distorted time creating temporary vortices, when Germany fell in 1945, this device was brought to the United States, which remains secret to this day, but an incident in Pennsylvania 1965 (USA) betrayed the possession of this artifact by the US military. Its creator Hans Kammler was taken prisoner for his scientific knowledge or perhaps he escaped to South America, had children, grandchildren and died peacefully. But these are just rumours...
