Stone field boundaries, most of them collapsed but still tracing their original curving lines, protrude through the surface of the bog across an area roughly 180 metres north to south and 130 metres east to west. They are low, seldom more than 40 centimetres above the ground, yet their persistence is remarkable. In places, the walls follow the terrain down into wetter hollows, sinking into deeper bog as though the land itself swallowed them mid-stride.

What makes Coonane genuinely unusual is not any single feature but the density of what survives within this one relict field system. Six hut sites are scattered through the network, the kind of small, likely circular stone structures associated with early agricultural settlement. Two enclosures, which would have served to contain livestock or mark out particular areas of activity, sit alongside them. A standing stone occupies the same space, one of those solitary uprights whose precise original purpose rarely survives in the record. Most striking of all is a wedge-tomb, a form of megalithic monument characteristic of the late Neolithic and early Bronze Age in Ireland, typically consisting of a tapering roofed gallery of large stones used for communal burial. Its presence here, embedded within what appears to be a working agricultural landscape of field boundaries and habitation sites, suggests this hillside above the Barony River was not simply farmed but layered with meaning and use across a very long period of time. The bog, by sealing much of it, has done the work of preservation that drier ground rarely manages.