Sitting in bogland on the eastern foothills of Knocknagallaun in West Cork, this small circular enclosure was cut deliberately into the slope, with the interior then raised on the downhill side to create a flat platform. The result is a roughly circular space, measuring just over twelve metres north to south and just over eleven metres east to west, held in place by three distinct forms of boundary: stone bank foundations to the north, a stone-faced scarp nearly one and a quarter metres high to the east, and a collapsed, low stone bank to the west whose interior face still stands at around ninety centimetres while the exterior has all but vanished into the ground.

Enclosures of this kind, sometimes called cashels or cahersa word preserved in the townland name Caherkeen itself, from the Irish cathair, meaning a stone ringfort, are a recurring feature of the Irish upland and bogland landscape. They were typically built during the early medieval period, though without excavation it is difficult to assign a precise date to any individual example. What makes this one quietly interesting is the care taken with the engineering. Cutting into a slope and compensating for the gradient with deliberate infill on the lower side suggests the interior space mattered enough to someone to warrant real effort, whether for habitation, livestock, or some other purpose the surviving structure alone cannot settle.