The one you seek is on a world forgotten by time and remembered by the same father of the universe.
—Kwasalas the Enlightened
Drahn was a planet in the Circolus System. It was a verdant, thriving planet which housed a sizeable population of scholars and Jedi, with a smaller population of linguists and biochemists. The planet was covered in greenery, with the most arid portions of the planet having a chaparral-esque climate. Drahn was seen as a primary location in the worlds of scholasticism and biochemistry.
Drahn During the Clone Wars
Upon the arrival of the Clone Wars to the Circolus System, it was thought that the Sith were planning an invasion of Drahn to gain access to the sophisticated biochemical facilities to manufacture biochemical weapons of mass destruction.