There is not much left of Dunseverick Castle, the last fort on this location for perhaps over three thousand years. Though the historical records are sketchy, this was also a power centre for the Dal Riata kingdom which used its maritime skills parts of the north off Ireland and the west of Scotland
Dunsevrick Harbour is somewhat of a knowledge blind-spot for me. I could find little information about the harbour other than the charges for boats. It seems to have been there for a long time.