Following their conquest of the galaxy circa 3636 BBY, the Eternal Empire, originating from the planet of Zakuul, constructed a shield bunker. This bunker was situated within the Juran Mountains of Alderaan and was designed to provide support to the Star Fortress positioned in geosynchronous orbit above it. The bunker, along with its deflector shield generator, was under the command of ZK-723S, a high-ranking Skytrooper, and was heavily guarded by strong defensive installations, walkers, and Eternal Empire troopers. Around 3630 BBY, the Outlander, who headed up an Alliance against Zakuul, brought together the local resistance against the Eternal Empire and orchestrated a bombardment of the bunker. This allowed the Outlander, accompanied by the Ithorian Jedi Choza Raabat, to break into and obliterate the bunker, thereby leaving the Star Fortress vulnerable.
The Alderaan shield bunker initially appeared in the video game Star Wars: The Old Republic through the Knights of the Fallen Empire digital expansion, released in 2015.