___
       | 9 |
       |___|
  ___   _^_   ___
 | 7 |_| 6 |_| 8 |
 |___| |___| |___|
        _^_
       | 5 |
       |___|
  ___   _^_   ___
 | 3 |_| 2 |_| 4 |
 |___| |___| |___|
        _|_
       | 1 | __^
       |___|/
        _^_
       |10 |
       |___|
        _^_
       |11 |
       |___|
         |
      portal
        _|_
       |12 |
       |___|

 1 Dark foyer (n,d,u)
 2 Tower, underground level (s,u,e,w)
 3 West wing (e)
 4 East wing (w)
 5 Tower, mid level (d,u)
 6 Tower, high level (d,u,e,w)
 7 Barracks (e)
 8 Storage (w)
 9 Tower, roof (d)
10 Collapsed tunnel (u,d)
11 Pit (u,portal)
12 Abyss (portal)