Like nearby Cherbury Camp, Hardwell Castle is not clearly in a strategic or easily defended position. It lies halfway down the scarp slope of the White Horse Hills and is tucked away in a curve, invisible from most angles. This particular positioning suggests its builders had a specialist purpose in mind, although exactly what that may have been remains a mystery.
Description
The site is surrounded by a double vallum140 by 180 feet (40 by 50m) in dimension.[3] It is 'multi-vallate', like Cherbury Camp.
↑A Handbook for Travellers in Berks, Bucks, and Oxfordshire: Including a Particular Description of the University and City of Oxford and the Descent of the Thames to Maidenhead and Windsor. London: J. Murray. 1872. p.52.