D&D 3.0: Tales from Mystara
Is located inside the crater of the volcano of Mount Kala on Honor Island of Ierendi and is the fortress and home of the Cabal of the Volcano. A very secure place with fire elementals as guards and Honor Goblins as servants. The Citadel is at once a university, a research laboratory, a small city and a training ground. All in one vast complex of tunnels, chambers corridors, galleries, and halls. There are 15 levels each open and spacious with balconies looking over the fire lake.
On top of the main building are four huge force field domes, each maintained at a different temperature. Here the life of the community may be seen, in the communal dining areas, the concert and lecture parks, the bazaars (where foods, goods, and art objects are available), and in the game arenas, where young and old sport in stylized magical competitions.