Karregheni was a star system located in the Klingon Empire in the Alpha or the Beta Quadrant. Its system was home to a number of planets. Karregheni III, or Kolm-an, was the only Class M world. It was home to an Orion Colony and pirate base, and was later dominated by Klingons, becoming a major military base during the Four Years War. (FASA RPG - The Orions module: Book of Common Knowledge)