schwit1 (797399) writes "Suspiciously high radiation levels around the Austrian town of St. Georgen an der Gusen had long fueled theories that there was a buried bunker nearby where Nazis had tested nuclear weapons during WWII. Those suspicions came one step closer to being confirmed last week after the opening of a 75-acre underground complex was dug out from below the earth and granite used to seal off the entrance, the Times of Israel reports. The excavation team was led by Austrian filmmaker Andreas Sulzer, who says the site was "likely the biggest secret weapons production facility of the Third Reich" — a facility that probably relied on forced labor from the nearby Mauthausen-Gusen concentration camp and may have even been the testing location for a nuclear bomb, the Daily Mirror reports. The weapons facility was believed to have been manned by SS General Hans Kammler and situated near the B8 Bergkristall factory, where the first working jet-powered fighter was created, International Business Times reports; Sulzer first got wind of the site after seeing references to it in an Austrian physicist's diary. The Washington Post cautions that while "the full scope of what occurred inside those reported chambers in the Austrian town of St. Georgen remains unclear and Sulzer’s conclusions are speculative, some analysts are already trumpeting the findings. ... The reported findings, if corroborated by further inquiry, could add fresh fodder to an ongoing debate over the Third Reich’s ultimately failed attempt to secure an atomic weapon."