It measures roughly fourteen metres along its longer axis and barely rises sixty centimetres above the surrounding ground. Beneath the turf, however, it is made up almost entirely of shattered angular stones packed into dark soil, and that combination is the tell. This is a burnt mound, a type of prehistoric cooking or processing site found widely across Ireland and Britain, and almost always positioned near water. The standard interpretation is that stones were heated in a fire, then dropped into a water-filled trough to bring it rapidly to the boil, cracking and blackening in the process. Over time, the discarded spent stones accumulated into exactly the kind of low, dark-soiled mound visible here.

What makes the Fauleens site particularly interesting is its immediate context. Around forty metres to the south-east, in the same field, there is a second possible burnt mound, suggesting this stretch of ground beside the north-westward flowing drain was returned to repeatedly, or used simultaneously at different points. Twenty metres to the north sits a rath, a type of enclosed farmstead defined by one or more earthen banks, typically associated with the early medieval period in Ireland, roughly the fifth to twelfth centuries. The clustering of these features does not necessarily mean they were all in use at the same moment; burnt mounds in Ireland are generally thought to date from the Bronze Age, considerably earlier than most raths. But their proximity in one small field is a reminder of how densely layered the Irish landscape can be, with structures from quite different periods sharing the same ground without any obvious relationship to one another.