Tributary

Tributary was a structure located on the artifical world of Iokath, next to the Chromium Garden. In 3631 BBY ARIES trapped the Alliance leadership on Iokath and Theron Shan, assuming the Tributary to be a secured location, picked it as a temporary base for the Alliance forces on Iokath. However, soon after the last Alliance members arrived, droids attacked from the Chromium Garden outside. The Alliance Commander and Vette went to search for another exist inside the Necropolis and the entire team later used a Colossus droid to fight off smaller droids outside while buying themselves time to escape in a shuttle through on the Tributary roof.

Behind the scenes
Tributary appears in Star Wars: The Old Republic: Knights of the Eternal Throne Chapter IV: Where Dreams Die and Chapter V: Ascension.