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
Gates of the Arctic Wilderness protection from bears, but such attacks rarely occur. Climbers enjoy the Arrigetch Peaks and Mount Igikpak. Although camping is unrestricted, wood is scarce and campfires are discouraged. The wilderness encompasses six designated Wild Rivers, the Alatna River, John River, Kobuk River, the North Fork of the Koyukuk River, part of the Noatak River and the remote and seldom visited Tinayguk River. Gates of the Arctic Wilderness Gates of the Arctic Wilderness is a wilderness area in the U.S. state of Alaska. Located in the Gates of the Arctic National Park and Preserve, it is in area, the third-largest designated wilderness