What is "drumanagh"

Drumanagh ( Irish Droim Meánach) is a headland near the village of Loughshinny, 20 km north of Dublin, Ireland. It features a 19th-century Martello tower and a large (200,000 m²) 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 a native Irish settlement that traded with Roman Britain.