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Iceborough is the capital city of the Walrus Herd, and the most prominent area of civilization in the Northern Tundra. As a result, it has been targeted numerous times by the Eggman Empire. It is located underwater, allowing easy access for great swimmers such as the Walruses. The city's buildings hang from a portion of ice above, making them almost look like stalactites. (StH: #215, #216)