This is where every military weapon developed on the Arc was made. It is better known as Professor Gerald Robotnik's laboratory. This is where the completed Ultimate Life Form, Shadow the Hedhehog was created. It was said that because of a failed experiment gone out of control here, the military shut down the Arc and eliminated all who came in contact with the experiment. The claim cerculated that Shadow was that experiment, and that is why he was sealed on Prison Island. But to this day, very few know what really happened.