Mayor of world's coldest city takes the Ice Bucket Challenge... in permafrost cave

The water - also emptied over him by another princess called Winter - was full of ice from Russia's coldest region. The charity spectacle took place in the Kingdom of Permafrost - one of the tourist attractions in Yakutsk, capital of the Sakha Republic, the largest entity in the Russian Federation, a territory almost the size of India. 

Mayor Nikolaev, 42, a married father of three, wore shorts and T-shirt in the sparkling ice-clad underground complex deep in a permafrost hill where the temperature is minus 10C. He transferred a sum of 30,000 roubles - about $800 - to the charity fund 'Celebration of Life' ('Prazdnik Zhizni'), which provides assistance to children suffering from cancer.

He challenged mayors of other major cities Magadan, Khabarovsk and Vladivostok, asking them to do take the challenge 'in nearly same conditions'. He got the challenge from the head of the 'Young Professionals' initiative in the Agency for Strategic Initiatives, Dmitry Peskov.