Initial remote sensing survey at Tlachtga, Co. Meath in 2011–12 highlighted the presence of multiple, partially overlapping phases of enclosure at the site. Three subsequent seasons of excavation provided critical interpretive evidence, with over 15,000 fragments of animal bone, human remains, charred plant material, evidence of metalworking, and a hoard of Anglo-Saxon silver coins dating to the late 10th century AD.The main activity at the site spans four broad periods