Extreme sports fans from the Ural Province decided to go skating on the bottom of the 210 m deep abandoned mine.
Its quarrying began in 1936 and in 1988 its ore just ran out so they had to give it up. The mine had a diameter of about 1 km and was 300 m deep. Later, it became flooded forming a skating-rink with an area of over 300 m2.
They had to find out how to go down the mine safely.
Half way to the skating fun.