At the very edge of the system, Sarka III is a very lonely planet that most people don't go to, even to hide. That might have to do with the fact that it is as cold as Hoth and has a deadly toxic atmosphere. Its noxious gases kill almost all species, but some races can survive, and even like to live on planets such as Sarka III. For that reason, it has slowly grown into the Tresarian ecumenopolis that we see today.