"A circular rampart (German: Ringwall) is an embankment built in the shape of a circle that was used as part of the defences for a military ...
[Read more]
fortification, hill fort or refuge, or was built for religious purposes or as a place of gathering.
The period during which these structures appeared stretches from the Neolithic to the Middle Ages." - (en.wikipedia.org 02.03.2020)
