BARNHAM, ENGLAND—Excavations in southern England have uncovered traces of a first-century Roman settlement. “All the archaeological features appear today as filled with pale grey silt, and it is usually easy to see that these must be silted-up ditches, pits and post-holes, but a large round grey splodge on the site was puzzling everyone,” John Mills, senior archaeologist for the West Sussex County Council, told BBC News. The large, round depression is thought to be a pond that was surrounded by trash pits filled with household debris. Pottery at the site had been crafted in the nearby Arun Valley. Tiles used by the Romans to equip stone buildings with under-floor heating suggest that a larger building may still be found at the site. To read more about life in Roman Britain, see "Artifact: Vindolanda Tablet."