Possible route could see 400km/hour bullet train pass through heart of Siberia and Altai region with stops in major cities.
Capable of carrying 200 people and tonnes of cargo, new blimp for the 21st century could soon be taking off.
Up to 300,000 people a year expected to pass through Sabetta International as region gears up to become a gas powerhouse.
Mysterious 'gigantic' hole in remote region spotted by helicopters over gas-rich Yamal peninsula.
Top secret Stalin-era aircraft went down with 2 million roubles on board.