The hazardous insect abode was located near a set of tanks filled with liquid nuclear waste, although the team didn’t detect any leaks. Instead, experts believe the nest set off Geiger counters through what’s known as “onsite legacy radioactive contamination.

True to the plot of a 1950s monster movie, an old nuclear weapons facility in South Carolina has birthed radioactive wasps, according to the U.S. Department of Energy. The discovery was made July 3 at the 310-square-mile Savannah River Site in Aiken, which produced plutonium and tritium for nuclear weapons during the Cold War.

Lions and tigers and … nuclear wasps?! That’s right, ladies and gentlemen. A radioactive wasp nest was discovered at a South Carolina facility that was once upon a time a plant that produced nuclear weapons.