I had a really wonderful walk along the Wansdyke on Sunday. Panoramic views of the Silbury Hill landscape on one side and the Vale of Pewsey on the other.
I was surprised that there appears to be nothing on TMA about the Wansdyke which runs from the outskirts of Savernake Forest to Maes Knoll near Bristol. It is the largest linear defensive earthworth after Hadrian's Wall and Offa's Dyke. It's construction seems to have similaries with the Avebury Circle but I understand it only dates from 400AD - 700AD and thus would not qualify to be included on TMA. However, it felt very much part of the ancient Avebury/Silbury landscpe.
Does anyone have more information about how old it really is?