Cellars are underground rooms generally used for storage. They may hold wine, beer, roots, vegetables, cheese, or other items. They are a related element to basements. They may have ladders or stairways leading down to them from the kitchens. They may have doors that also lead to the backyard or gardens. They may access underground cave systems. Cellars may have been converted from their primary purpose to another, such as a study, laboratory, or cult chamber. They may be infested with rats.