The souterrain at Coolbane in County Cork survives as none of these things. There is nothing to see. The site exists now only in the record of its own destruction, which gives it a quietly unsettling quality that more photogenic ruins rarely possess.

Around 1960, levelling work on a ringfort at Coolbane exposed three underground chambers. A souterrain is a man-made underground passage or series of chambers, typically built during the early medieval period in Ireland, often using dry-stone construction, and associated with nearby settlement sites such as ringforts. Their precise function is debated, though they are generally thought to have served for storage, refuge, or both. The three chambers uncovered here were part of the same ringfort complex, a circular enclosed settlement of a type that once numbered in the tens of thousands across Ireland. Once found, the chambers were infilled, and the levelling continued. No visible surface trace now remains.