Alrosa Air Company Antonov AN 38-100 flight over Mirny city and the (very) close open pit diamond mine "Mir" and the near Rudnik Internatsional'nyy Pit.
The city of Mirny, Sakha Republic, have a population of 37000 people, the "Mir" mine was discovered in 1955 and the open pit is 525 meters (1,722 ft) deep and 1,200 m (3,900 ft) large.
Currently the excavation activity is continuing with of a network of underground tunnel. The bottom of the mine is flooded, but was previously covered with a layer of rubble to stabilize the surface pit.