Excavations by Environment Agency contractors creating a new bird reserve on Teesside have revealed Bronze and Iron Age artefacts -- and the remains of a former Roman settlement which was previously unknown. The discoveries at Greatham Creek are significant as they are the first such remains ever to be found next to the salt marsh on the north bank of the Tees Estuary... Among the finds are flint tools and pottery fragments, an arrowhead, jet jewellery, flint thumbnail scrapers, Bronze Age blades, ancient burial mounds and the remains of several Roman roundhouses... Much of the inter-tidal habitat around the Tees...