The cropmark, captured in photograph St. Joseph, AJS 23, shows a ring approximately 40 to 50 metres across; a substantial feature that would have dominated this patch of countryside in its day. The aerial view suggests there may be internal structures within the circle, though these details remain tantalisingly unclear from above. A possible entrance appears to face north, whilst faint lines to the south and east hint at associated field boundaries that once connected this enclosure to the wider landscape.

This type of circular enclosure is fairly typical of Irish archaeological sites and could date anywhere from the Bronze Age through to the early medieval period. Without excavation, it's difficult to determine whether this was a defended farmstead, a ritual site, or perhaps a combination of both; many such enclosures in Ireland served multiple purposes over their long histories. The cropmark itself forms when buried archaeological features affect crop growth above them, with plants growing differently over ancient ditches and banks than they do over undisturbed soil, creating patterns visible from the air that are often invisible at ground level.

The site remains uninvestigated beyond this aerial identification, sitting quietly beneath productive farmland as it has likely done for centuries. This information comes from the comprehensive Archaeological Survey of County Donegal, compiled by Brian Lacey and his team in 1983, which catalogued the county's archaeological heritage from the Mesolithic period through to the 17th century. Like many of Ireland's estimated 45,000 ringforts and enclosures, this Dooish example awaits further study to reveal its secrets.