That near-invisibility is, in its own way, the point. What appears to be a scrubby tangle of vegetation is actually one of the thousands of ringforts scattered across Ireland, a category of monument so common and yet so persistently misread that many survive simply because farmers have left them alone.

This particular example is a rath, the term used for a ringfort constructed from earth rather than stone. A rath typically functioned as a defended farmstead during the Early Medieval period, roughly between the fifth and twelfth centuries, with the enclosing bank and ditch providing both a physical barrier and a marker of status for whoever lived within. At Coolygorman, the circular enclosure measures approximately forty metres in diameter. The earthen bank reaches an internal height of around 0.65 metres and an external height of 1.55 metres, figures that suggest the outer face presented a more imposing obstacle than the interior would imply. Beyond the bank lies an external fosse, a defensive ditch, measuring roughly 0.9 metres deep and 4.6 metres wide. These dimensions were recorded and compiled by Denis Power, whose survey notes were uploaded in August 2011.

The site sits in level pasture, which makes its general outline legible even if the details are not. The bank and its interior are covered by dense overgrowth, so a visitor should not expect to walk around a tidily preserved earthwork. What you are more likely to encounter is a raised, tangled mass of scrub and bramble that marks the perimeter, with the interior largely impenetrable. That said, the surrounding ground is flat enough that the slight rise of the bank is noticeable once you know to look for it. There is no formal access or signage, and the site sits on private agricultural land, so any visit would require both permission and a reasonable tolerance for uneven, overgrown ground.