Otoh Dooku was an underwater retreat on Serenno created by House Dooku and located ten kilometers from the Demurra Trench. It was modeled after the Gungan underwater cities of Naboo and constructed under the orders of Count Adan Dooku who had an appreciation of things of grace as well as of beauty. In 2 BBY, Duke Rodas Borgin kept the young Bron Dooku at Otoh Dooku where he was rescued by Candra Tymon and Jahan Cross.