Soledar Salt Mine

The Soledar Salt Mines (also called Artyomsol Salt Mines after the State Enterprise Association Artyomsol that operates the mines) are located in the city/suburb of Soledar in the Bakhmut municipality in Donetsk Oblast, Ukraine. The scale of the mines is vast. The mines have 125 miles of tunnel, are at a depth of 288m, and are 30 meters in height, The largest resembles a hangar of about 100 meters long and 40 meters width and 40 m height, and has accommodated soccer matches and the inflation of a hot air ballon.
The temperature underground is constant at 14–15 °C, 772 mm Hg air pressure and 60% humidity regardless of time of the year. giving rise to claims of healing properties for lung conditions.
Many of the chambers are exquisitely decorated with carvings in the salt rock There are accommodation areas and even a church.
In October 2004 the Donetsk Symphony Orchestra under direction of Austrian conductor Kurt Schmid gave a symphony concert in the main chamber, accompanied by Viennese Opera, singer Victoria Lukyanets.
A particle physics detector, Artyomovsk scintillation detector is located in the mine.
History.
The mining of salt started in the town of Soledar in the 19th century.