The playing fields of Dwr-y-Felin Comprehensive Upper School in Neath, Wales must occupy a strategic location since they were the site of not one, but two Roman forts, a 1st century timber structure and a later stone fort.
The dig, under supervision by the Glamorgan/Gwent Archaeological Trust, has unearthed four parallel ditches with a rampart and a tower, as well as seven bake ovens. The timber structure is considered unlike anything previously seen in Britain. "There are some very unusual defences. We can't find anything like it anywhere else," said Richard Lewis, head of projects for the Trust.