Yakutsk
From Openwaterpedia

Ger Kennedy in the Lena River in Yakutsk, Russia where he completed a 52m Under Ice Swimming challenge in water -1ºC (30.2ºF) and air approximately -13.8ºC (-7.6ºF)
Yakutsk (Russian: Якутск) is the capital city of the Sakha Republic, Russia, located about 450 kilometers (280 mi) south of the Arctic Circle.
Yakutsk is a major port on the Lena River. It is served by the Yakutsk Airport as well as the smaller Magan Airport. It is a major supplier of diamonds. Its population is almost 300,000 and its average winter temperature is −34°C (−30°F).
Open Water Swimming[edit]
Ger Kennedy completed an Under Ice Swimming challenge of 52 meters under a 1 meter sheet of ice in March 2016.
Video[edit]
Courtesy of Bolot Bochkarev