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 (organization) Hall and Conference Centre. Held every October since then, the event is described as "a new mechanism for existing institutions, organizations, forums, think tanks, corporations and public associations to reach a global audience in an efficient way." According to the organization's website, the Arctic Circle holds smaller events in different locations around the world, "so that participants can become familiar with the challenges, needs and opportunities presented by these unique environments." Arctic Circle forums have been held in Alaska, and Singapore, Greenland, Quebec City, and Washington, D.C. The organization will also help facilitate smaller meetings of organizations and individuals to