From Halopedia, the Halo wiki
Szarvas Regeneration and Salvage Facility, also known as the Szarvas salvage yards, was a United Nations Space Command site.
During Operation: WOLFE in 2559, a flight of Seraphs flying from the direction of the site began to chase the UNSC Special Delivery as it inserted into Reach. At that time, it was in ruins.
Szarvas is a town in Hungary. It is also the Hungarian word for 'deer'.