Castle Diagramdetails

Diagram showing the various parts of the battlements of a castle. The text, under the heading References, lists 1. The Barbican, 2. The Ditch of Moat, 3. Wall of the outer Ballium [now called the outer bailey], 4. Outer Ballium [Outer Bailey], 5. Artificial Mount, 6. Wall of the Inner Ballium [inner bailey], 7. Inner Ballium [Inner Bailey], 8. Keep or Dungeon.

This is taken from Machines of War.