Chernobyl's Elephant's Foot still sits inside the damaged reactor as a highly radioactive corium mass. Its weakening but persistent radiation keeps it central to safety research and disaster memory.

From sites housing deadly materials to the locations of precious artefacts, here's the science behind some of Earth's most ...

Beneath the ruins of Reactor 4 at Chornobyl, there is a hidden but very dangerous nuclear mass called the Elephant's Foot. The mass is made of Corium, a mixture of molten lava, including uranium, ...