Valery Malkov from Bratsk, Irkutsk region, was wearing only a T-shirt, shorts and slippers.
Russia's coldest region is up to 20C milder than average this month, say meteorologists.
It may be -40C outside but that did not put off fearless Irish strongman from pouring water over his head.
Its residents will live in a vast man-made 'igloo' to protect them from polar temperatures and some of the most biting winds on the planet.
A renaissance of one of Siberia's first outposts as the Far North becomes the new economic frontier.
Many prehistoric creatures craved salt and vital minerals missing from their diets due to abrupt climate change, suggests a new scientific expedition.