Mir mine is the giant Siberian hole

Mir mine plunges over 525 meters.

It is located in Siberia.

Kimberlite volcanic rock sample from Mir mine shown.

Kimberlite volcanic rock was found here, which holds diamonds.

Mining began at Mir mine in 1957 in icy Siberia.

Mir mine's open pit is 1,200 meters across and vast.

In the 1960s, Mir mine produced 10 million carats yearly.

Mir mine produced two huge diamonds, one weighing 342 carats in 1980.

The 342-carat diamond discovery in 1980 was a Soviet prize.

Mir mine yielded a 468-carat diamond, the largest in Russia.

Surface mining at Mir mine ended in 2001 after 44 years.

Underground mining started by 1999 and continues today at Mir.

Flooding trapped miners in 2017 but most were rescued safely.

Mir mine is a giant hole over 525 meters deep.