Tridea was an artificially created moon that orbited the planet Gamont, the third planet in the Niushe star system. Like Korona it was a paradisical body with city-sized interstellar palatial buildings, and it had been used as a personal training base for the members of House Jaederan during the times of the Faufreluches. Its home planet was later conquered by the Honored Matres, prior to their merger with the Bene Gesserit.