However, visitors today won't find any visible traces of this ancient structure. The site sits on a rocky outcrop, wedged between two cultivated fields, with only scattered stones and loose rocks hinting at what might have once stood here.

Archaeological evidence suggests this wasn't actually a fort in the traditional sense, but rather a cashel; a type of stone ringfort commonly found across Ireland. Unlike earthen ringforts with their banks and ditches, cashels were built entirely from stone, taking advantage of naturally defensive positions on rocky ground. The terrain at Sladran, with its exposed rock outcrop, would have been ideal for such a structure, providing both building materials and a solid foundation.

The site was documented as part of the comprehensive Archaeological Survey of County Donegal, compiled by Brian Lacey and his team in 1983. This survey catalogued field antiquities spanning from the Mesolithic period right through to the 17th century, creating an invaluable record of the county's archaeological heritage. While the physical remains at Sladran may have vanished, its inclusion in both the historic OS maps and modern archaeological surveys ensures this piece of Donegal's past isn't entirely forgotten.