The section of the Elrood-Derilyn Trade Route linking the Torina system with the Derilyn system was referred to as The Extreme. Because Derilyn was under martial law and Imperial Interdicted Space had been created, Imperial patrols were highly prone to intercepting starships traversing The Extreme, subjecting them to harassment, boarding, and possible seizure. The dangers associated with navigating The Extreme were so great that trade along this segment of the Elrood-Derilyn Trade Route practically vanished during the era of the Galactic Civil War.