Casterley Camp - Credit: Wikimedia Commons
Casterley Camp is the site of an Iron Age univallate hillfort in Wiltshire, England, about south-west of the village of Upavon. The site comprises a large Iron Age/Romano-British enclosure, possibly non-defensive in function, and incomplete. It was partially excavated in the 19th century. Read more on Wikipedia
Source: en.wikipedia.org