The Zavian Abyss, a perilous zone situated within the Expansion Region of the galaxy, presented a significant danger. This electrically charged vortex, replete with asteroids, held the remnants of many destroyed starships, notably the debris of an ancient _Venator_-class Star Destroyer. Following the Battle of Endor, Vanguard Squadron, along with the Starhawk, executed a surprise ambush against the Overseer while in the Zavian Abyss.
The 2020 Star Wars: Squadrons video game was the origin of the Zavian Abyss's creation.