Rock Level One
The first level may not be the first physical level underground but it is the main of the fort. Found here are the entrance to the bedrooms, kitchens, alcohol brewing and butchery work areas as well as in internal pastures. This level should always be entirely rock and below any aquifers. Often a secondary stair leads up from in between the kitchens and drink production to the farm in soil levels above.
Rock Level Two
Crystal, Stone and Clothing workshops are found here as well as additional bedrooms. The central core of the bedrooms is often built as a hospital rather than the 4 rooms.
Rock Level Three
Level three is dedicated to producing metal and metal products.