In the Warhammer world, even something as familiar as a stone wall can offer all manner of possibilities. Granted, the wall might just be a boundary line of some kind – but there's probably more to it than that. It might be the remains of a mighty Bretonnian castle, warded against the Undead. Or it could be that the wall was made from stolen grave markers, and unquiet spirits linger nearby. Perhaps the wall is the remains of some calcified Daemon just waiting for a magical charge to bring it back to life. There are dozens upon dozens of possibilities, and that's just a wall. You'd be hard-pressed to find something more ordinary in the normal run of things – but this is the Warhammer world, and almost nothing here is normal.
Over the next few pages you'll find some examples of terrain rules, covering the mundane through to the arcane. Many of the terrain pieces in the Warhammer range have specific rules that apply to them, and you'll find that whatever you have in your terrain collection there will be suitable rules here, or at least inspiration for devising your own. The rules for placing terrain pieces on your tabletop can be found in the Fighting a Warhammer Battle chapter, later.