Alaska is the northernmost and largest state in the United States. It has more than three million lakes, and glacier ice covers about 75'000 square-kilometres. The state's road system covers a small area, linking the central population centres. North America's tallest mountain, the legendary Mt. McKinley, is located in Alaska, and the region is home to a large number of mammals, including caribou, moose, brown bears, black bears, wolves, musk oxen and mountain goats. Over 400 species of birds can be found in Alaska, and the shorelines are home to an abundance of marine life, including sea lions, walrus, whales, seals and sea otters.

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