T'Lani planet devastated by the Harvester weapons, where Bashir and O'Brien hid after their colleagues were massacred.
T'Lani III is a planet left devastated by the war between the T'Lani and the Kellerun, during which Harvester bioweapons were used. In Armageddon Game, the last Harvesters are destroyed aboard a T'Lani vessel in orbit, and when Kellerun soldiers attack the science team, Bashir and O'Brien beam down to escape.
They take shelter in an abandoned town on the surface, where O'Brien struggles to repair a communications system while the Harvester infection takes hold of him. The ambassadors track them down there, and Sisko and Dax rescue them just in time.