Chak was a Romulan Star Empire airless moon in orbit of a gas giant located in an unnamed system of The Triangle at the edge of the Alpha and Beta Quadrant. The closest planet in its vicinity was D'Kornam. It was the location of a secret Romulan base. Officially the surface was the location of a communication relay station occupied by six personnel members. Unofficially, there were around 200 Romulan officers and enlisted personnel, officialy reported as killed in action, stationed in an underground facility. (FASA RPG module: The Triangle)