Townapedia
Old Udachny-Gagarin Street+Overburden dump
Old Udachny-Gagarin Street+Overburden dump · Inopta, CC BY 4.0
Old Udachny Gagarin Street 2
Old Udachny Gagarin Street 2 · Inopta, CC BY 4.0
Old Udachny-Gagarin Street-Bakery
Old Udachny-Gagarin Street-Bakery · Inopta, CC BY 4.0
Old Udachny-Gagarin Street 1
Old Udachny-Gagarin Street 1 · Inopta, CC BY 4.0
Old Udachny-Gagarin Street 3
Old Udachny-Gagarin Street 3 · Inopta, CC BY 4.0
Old Udachny-Gagarin Street 4
Old Udachny-Gagarin Street 4 · Inopta, CC BY 4.0

Udachny, Russia

Удачный

Udachny is a town of 15,266 people in Sakha, Russia, founded in 1967.

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Population15,266 GeoNames
Local nameУдачный
RegionSakha
Elevation380 m 1,247 ft
Founded1967
Time zoneAsia/Yakutsk
Land area2.0 km²
Nearest airportPolyarny Airport (PYJ) 17 km

About Udachny

Udachny (Russian: Удачный, IPA: [ʊˈdatɕnɨj], lit. successful or lucky; Yakut: Удачнай, Udaçnay) is a town in Mirninsky District of the Sakha Republic, Russia, located on the Markha River, 508 kilometers (316 mi) from Mirny, the administrative center of the district. As of the 2010 Census, its population was 12,613.

From the Wikipedia article Udachny (this version), under CC BY-SA 4.0.

History

The Udachnaya pipe diamond deposit was discovered in 1955. Due to its isolated location, it was not exploited until the 1960s. In conjunction with the beginnings of diamond production, the urban-type settlement of Udachny was founded in 1968; town status was granted to it in 1987.

As part of a plan to create the basin for a tailings dam for the nearby diamond mine, a 1.7 kiloton atomic bomb was detonated 98 meters (322 ft) underground near Udachny on October 2, 1974. Original plans had called for eight similar explosions to be conducted; however, due to radioactive fallout being far greater than expected, the project was halted after the first blast. The shaft in which the explosion was held was not plugged until eighteen years later, with an estimated 7-to-20-meter (23 to 66 ft) thick concrete sarcophagus.

From the History section of Udachny on Wikipedia, under CC BY-SA 4.0.

Map of Udachny

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Getting there and nearby towns

Polyarny Airport (PYJ) is the nearest airport with scheduled flights listed in OpenStreetMap, 17 km away.

  • Aykhal 69 km southwest, about 1 h 15 min by car

Drive times are estimates from straight-line distance, not routes.

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Page built November 4, 2026. Spotted a mistake? Tell us or suggest a place.