Drumanagh is a headland near the village of Loughshinny, in the north east of County Dublin, Ireland. It features an early 19th-century Martello tower and a large Iron Age promontory fort which has produced Roman artefacts.
Some archaeologists have suggested the fort was a bridgehead for Roman military campaigns, while others suggest it was a Roman trading colony, or at least the site of a regular trading "fair", or a native Irish settlement that traded with Roman Britain, as Roman brooches and metalware in the style of Roman Britain were found nearby.
The site was acquired, reportedly for about €1 million, by Fingal County Council in 2017.
Wikipedia https://en.wikipedia.org/wiki/Drumanagh
Address Ireland
Coordinates 53°32'26.505" N -6°4'43.218" E