Strike Base XR-484 acted as the main staging point for all Imperial operations on the planet Ossus during the Invasion of Ossus and was constructed within a field of starship wreckage on the recommendation of the scouts who first reconnoitered the planet and correctly assessed that the Jedi were more interested in exploring ancient structures than old crashed ships. This ensured that the Imperial base could have been established without drawing enemy attention.
The Nest
The members of the Raven Squad consistently referred to the base as "the Nest", a term that Darth Malora pointedly refused to use during the Invasion of Ossus.
The majority of the ship wreckage around XR-484 was the result of crashes caused by the Cron Supernova centuries ago. However, the remains of newer vessels were also present at the time of the third Galactic War. This lead to suggestions that atmospheric or gravitational conditions somehow resulted in a higher-than-average distribution of crashed ships in this specific area.