Coordinates : 69 ° 23 ′ 46.39 ″ N 30 ° 36 ′ 31.20 ″ E \ / 69.3962194 ° N 30.6086667 ° E \ / 69.3962194 ; 30.6086667 The Kola Superdeep Borehole ( Russian : Кольская сверхглубокая скважина , Kolskaya sverkhglubokaya skvazhina ) is the result of a scientific drilling project of the Soviet Union in the Pechengsky District , on the Kola Peninsula .
Coordinates : 69 ° 23 ′ 46.39 ″ N 30 ° 36 ′ 31.20 ″ E \ / 69.3962194 ° N 30.608667 ° E \ / 69.3962194 ; 30.608667 The Kola Superdeep Borehole ( Russian : Кольская сверхглубокая скважина , Kolskaya sverkhglubokaya skvazhina ) was a very deep hole on the Kola Peninsula in Russia .