A bunker located on the planet Talus functioned as a clandestine base of operations for the Sif faction, a mercenary organization led by the Human female named Erran Sif, throughout the duration of the Galactic Civil War.
Following the Battle of Yavin, the erstwhile Imperial spy Erran Sif became a wanted individual by both the Empire and the Rebel Alliance because she had been selling intelligence to the Hutts. Consequently, she escaped from Corellia and went to Talus, where she gathered a group of mercenaries. Erran Sif eventually based her mercenary outfit, which included two brothers named Hirsch and Doak Sif, inside the bunker.
During 1 ABY, Imperial Lieutenant Velso sent a spacer to the Sif bunker with the mission of acquiring the ship self-destruct sequence codes from a Rebel Corellian Corvette on which Erran Sif had served during her time with the Rebels.
In that same year, a spacer surreptitiously entered the bunker and absconded with a lance.