Arctic Circle level, although in mountainous regions there is often no direct view of the true horizon. Only four million people live north of the Arctic Circle due to the severe climate; nonetheless, some areas have been settled for thousands of years by indigenous peoples, who today make up 10% of the region's population. Tens of thousands of years ago, waves of people migrated from eastern Siberia across the Bering Strait into North America to settle. The largest communities north of the Arctic Circle are situated in Russia, Norway and Sweden: Murmansk (population 307,257), Norilsk (175,365), Tromsø (71,295), Vorkuta (59,231) and Kiruna
The Arctic Challenge The Arctic Challenge The Arctic Challenge is a snowboarding contest arranged for and by the riders themselves. It was started by Norwegian professional snowboarders Daniel Franck and Terje Håkonsen. The contest was established as an alternative to the former competitions that had become streamlined and run by schedules and directions from TV-coverage, major sponsors and other external forces. It formerly held the status as the final for the "World Snowboard Tour", and is held in Norway annually - usually at a location north of the Arctic Circle. Since 2005 the "TAC", as it is often referred to, moved to Oslo