Found in Kamchatka's Valley of the Geysers, it promises a scientific breakthrough, say experts.
When Vadim Kolpakov went on an expedition to the north of Irkutsk region, he had no inkling of the sensational discovery he was about to make.
Geysers, active volcanoes, thermal lakes, mountains, Pleistocene glaciers, cascading rivers... and a lot of bears!
A new air link between Alaska and the Russian Far East is opening up a new world of adventure tourism to US visitors.
Mysterious 'gigantic' hole in remote region spotted by helicopters over gas-rich Yamal peninsula.
Yakutia Airlines boosts flights from Alaska to some of the world's greatest, yet most unexplored holiday destinations.