Utterbol Castle, once the home of Count Durell of Kirke, was captured by Prince Briareus in the invasion and subsequently expanded by the ruck-men, who added an extensive timber outer works.
| A | The eastern timber gates guard a steep earthen access ramp that leads directly to the Keep. |
| B | Two sturdy timber gates protect the main entrance into Utterbol. Rotting-Eye rucks equipped with bows usually man the walls and towers. |
| C | The outer works are where most of Briareus's regular garrison are housed. |
| D | The inner ward of the castle is surrounded by thick stone walls. A large garrison of veteran Black Blades is stationed here. |
| E | The main entrance to the Keep is heavily defended. |
| F | The personal quarters of Prince Briareus himself is said to hold a secret entrance to the fabled treasure vaults of Utterbol. The Prince is surrounded by his fearsome guard of elite Black Blades. |