To me, "hill fort" conjures up celtic oppidae or palisade-and-ditch hill forts like Maiden Castle. Basically, take a nice hill with a good view all around, level the top and use the fill to make a turf wall. Dig a ditch below this wall, and use that soil to make another wall. The largest forst have three ditches and three walls.
RR
It is by my order and for the good of the state that the bearer of this has
done what he has done.
- Richelieu
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