The deepest hole on earth was made by soviets who tried to see how deep they could go!

Kola Superdeep Borehole is the result of a scientific drilling project of the Soviet Union.

The project attempted to drill as deep as possible into the Earth’s crust. Over forty years ago, researchers in the Soviet Union began an ambitious drilling project whose goal was to penetrate the Earth’s upper crust and sample the warm, mysterious area where the crust and mantle intermingle.

This area is so deep that the Russian scientists had to invent new ways of drilling, and some of their new methods proved quite inventive. But despite the valiant effort which spanned several decades, the Russians never reached their goal!

This project, however, provide a plethora of information about what lies just beneath the surface, and it continues to be scientifically useful today!This borehole cannot be directly compared with any other borehole in the world. It is unique and it can be found on the Kola Peninsula in case you want to check it out.