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
Arctic Circle Air Arctic Circle Air Arctic Circle Air was an American airline based in Fairbanks, Alaska, USA. It operated scheduled commuter services and charter flights to over 16 Alaskan communities. It was established and started operations in 1973. Its main base was Fairbanks International Airport. In October 2009 Arctic Circle Air was acquired by the parent company of Frontier Alaska. Arctic Circle Air was merged into the Era Alaska operation. Era Alaska is the renamed operation of Frontier Alaska now that it has been blended into the operating certificate of Era Aviation. In 2011 Arctic Circle Air's certificate was obtained by Marianas