This coastal defensive site represents one of many such fortifications that once dotted Ireland's Atlantic shoreline, where communities made strategic use of natural cliff formations to create easily defendable positions.

Archaeological investigations led by O. Davies revealed a fosse, or defensive ditch, measuring three feet in depth that yielded significant finds. The ditch contained habitation deposits; clear evidence that this wasn't merely a temporary refuge but a place where people lived, worked, and carried out their daily activities. These deposits, along with other archaeological material found within the fosse, provide valuable insights into the lives of those who occupied this coastal stronghold.

While modern construction has transformed much of the promontory, the site remains an important piece of Donegal's archaeological landscape. It stands as a reminder of how Ireland's coastal communities once organised their defences, taking advantage of the natural topography to create fortified settlements that could withstand threats from both land and sea. The surviving evidence, though fragmentary, helps archaeologists piece together the story of coastal life in ancient Ireland.