"Ruapekapeka Pa Historic Reserve encompasses the pa, and advanced and main British positions from which the battle was fought. The ditch and bank defences of the pa are still visible along with one of Kawiti’s cannon and the well which supplied water to the defenders. The earthen defences of the advanced British position are also still visible."
This was the first Trench Warfare ever encountered by English forces. Google Ruapekapeka. It is a very interesting story.