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 in the Tomb's Icewall Ravine on the planet Belsavis, serving as a support structure for the Star Fortress positioned in geosynchronous orbit above it. The bunker, along with its deflector shield generator, was under the command of ZK-094R, a high-ranking Skytrooper, and was heavily defended with fortified positions, walkers, and Eternal Empire troopers. Approximately around 3630 BBY, the Outlander, who headed an Alliance opposing Zakuul, united the local insurgents against the Eternal Empire. The Outlander orchestrated a bombardment of the bunker, which created an opening for the Outlander and the Whiphid K'krohl to break through, demolish the bunker, and leave the Star Fortress vulnerable.
The Belsavis shield bunker initially appeared in the video game Star Wars: The Old Republic, specifically within Knights of the Fallen Empire, a digital expansion released in 2015.