The Hauptwirtschaftslager SS and Truppenwirtschaftslager were large areas of storage primarily for the SS such as ammunition, weapons, uniforms and the facilities for mass laundry operations. The area was split in the middle by the road west from Auschwitz I past the former pre war Polish Tobacco Monopoly. The land on the south of the road was became the Hauptwirtschaftslager SS. Some of the pre war buildings commissioned for these uses included the Tobacco Monopoly that had previously been used as the first camp of Auschwitz.
On the north edge of the complex, a sentry point and watchtowers were erected covering 2 large mechanics garages. These garages were unfortunately demolished in around 2008, however the foundations still exist as of 2016.
The warehouses and buildings to their south included accommodation for the SS, the SS canteen and general storage facilities. The SS Bakery, whilst not part of the Hauptwirtschaftslager SS, was just west of the canteen. The SS accommodation building for the SS sits in ruins next to the former SS canteen that has recently undergone some external repairs. To the south of the SS accommodation building was one of the many gravel pits where prisoners were forced to work. The area is now fields that is still surrounded by camp posts that once made the prison walls.
Information about sources we used while researching the industrial zones of Auschwitz you can find here.