Great Lakes

The Great Lakes are a group of five fresh water lakes on Earth, located in the continent of North America. These lakes - named Michigan, Superior, Huron, Erie, and Ontario - are the largest fresh water lakes on Earth.

The Great Lakes are located within or bordering the nation states of the United States of America and Canada. A number of cities have developed along the border, including Chicago, Illinois and Toronto, Ontario.

The USS Enterprise once encountered a planet which appeared to be an exact duplicate of Earth, with the same enviornmental conditions and the same geographical features - including the Great Lakes. (TOS episode Miri).

In the continuity of the books written by William Shatner, in the mirror universe the Great Lakes were a target of the Klingon-Cardassian alliance. Klingon cruisers fired continously into the lakes, evaporating them and causing a runaway greenhouse effect which devastated the planet's climate. (TOS novel Spectre).