|This location exists primarily or exclusively within the Pre-Super Genesis Wave continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
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)