The site is not a ringfort in the conventional sense, where you might expect the clear trace of a dwelling at the centre. Instead, the excavated area produced almost no evidence of habitation, and only the faintest suggestion of any structures. Whatever purpose this enclosure served, it was not simply someone's farmstead.

The site came to light in 2005 during pre-development investigations, the kind of archaeological survey that routinely precedes construction work and occasionally turns up something worth pausing over. This was one of those occasions. The multiple ditches, each one representing significant effort in a pre-industrial landscape, were found to date to a very precise window. A calibrated radiocarbon date recovered from one of the ditches points to AD 1002 to 1013, placing the site firmly in the late Viking Age in Ireland, a period of considerable political turbulence across the island, including the years immediately surrounding the Battle of Clontarf in 1014. Radiocarbon dating works by measuring the decay of a carbon isotope in organic material; calibration adjusts the raw figure against known fluctuations in atmospheric carbon to produce a more reliable calendar date. The findings were published by T. Bolger in 2009.

The enclosure is not a visitor attraction in any formal sense, and there is nothing visible at ground level today. Its significance lies in the archaeological record rather than any surviving physical feature. For those with an interest in early medieval landscape archaeology, the published report by Bolger offers the clearest route into understanding what was found here. The broader area of north County Dublin has a layered early medieval history, and Flemingtown sits quietly within that landscape, notable not for what was found inside its ditches, but for the puzzle of why so much effort was spent digging them around what appears to have been empty ground.