One of the deepest pits in the world is located in Bashkiria. It was founded on the site of a copper-zinc and copper-iron pyrite deposits. With a diameter of two kilometers, pit depth reaches more than five hundred meters. Even standing on the edge of a viewing platform to see the bottom of the enormous funnel is not possible.

History education career began at the end of 1912, when one of the local hunters near the burrow dug marten, found a heavy red clay with unusual crystals and drove several bags of "wonder land" scientists for analysis. The research results have exceeded all expectations of soil - clay found in the present with an admixture of iron ore precious metals. Over time, close to the quarry formed Bashkir copper and sulfur plant (BCSC), is engaged in mining ores. Rich deposits of impurities from gold and silver are not only treated during the Civil War.

City Sibai formed through career is at the crossroads of Asia and Europe, in the mountain range Irendyk and four hundred kilometers from Ufa. Translated from the Bashkir name means "rich in copper." Nowadays, one of the deepest sections of the earth is a natural wealth of Bashkortostan and its size impressive landmark.