Elephant's Foot (Chernobyl)

The Elephant's Foot is the nickname given to a large mass of corium and other materials formed underneath the Chernobyl Nuclear Power Plant, near Pripyat, Ukraine, during the Chernobyl disaster of April 1986, notable for its extreme radioactivity. It is named for its wrinkly appearance, evocative of the foot of an elephant.

Discovered in December of the year of the disaster, it is located in a maintenance corridor below the remains of Reactor No. 4, though the visible "elephant's foot" is only a part of a larger mass. It is still an extremely radioactive object, though the danger has decreased over time due to the decay of its radioactive components.