The Southeastern region of Alaska is known as Alaska’s Inside Passage, since the ocean channels are protected by islands, which you pass through on your way up the coast. This region is comprised of dozens of islands and a thin stretch of mainland divided from Canada by the Coast Mountain Range. Admiralty Island is known for having the highest concentration of brown bears in the world. Alaskan towns are nestled in valleys and along the coastline, backed by mountains and rain forest.