T'Lani III was the third planet in its star system. This planet was formerly inhabited by the T'Lani species, until the entire population was wiped out by Harvesters, deployed during the war against the Kellerun that ended in 2370. Miles O'Brien and Julian Bashir hid in an abandoned command center on T'Lani III after the T'Lani and Kellerun authorities attempted to eliminate them and their knowledge of the Harvesters. (DS9: "Armageddon Game")