A wonderful example of one of the many bastions on site; they would have a rock or arrow launcher on top. The original knapped flint is still there, too high to rob. The flints are held together with concrete, a great Roman investion.
Uploaded to Geograph by Ashley Dace on 6 July 2010
Photo © Ashley Dace, 6 July 2010. Licensed for reuse under this Creative Commons licence