Mount Ash, Ash Big, Co. Louth
In the townland of Ash Big, County Louth, a substantial earthen mound rises from the landscape, its circular form measuring approximately 51 metres across at the base and tapering to 29 metres at its summit.
Mount Ash, Ash Big, Co. Louth
Standing between 5.8 and 6.8 metres high, this motte is surrounded by the remnants of a defensive fosse, or ditch, that once provided additional protection to the site. The fosse varies in width from 11.5 metres at its top edge to just 2 metres at its base, whilst an external bank, originally about 3.7 metres wide but now expanded to 7.2 metres in places, curves around the structure from the northeast to northwest sections.
The mound’s surface tells a story of centuries of use and alteration. Its uneven top slopes inward towards a central depression where quarrying has taken place over the years, whilst stone facing remains visible along the southern face of the mound’s midsection. The outer bank features drystone walling, likely a more recent addition, which extends across the fosse on the western and northeastern sides and continues as a facing at the motte’s base where the original bank has disappeared. These modifications suggest the site has been repurposed and maintained well beyond its original medieval construction.
Archaeological investigation in 1872 revealed intriguing finds near the base of the mound, including pottery fragments and a bronze prick spur, offering glimpses into the site’s medieval past. The presence of two souterrains adds another layer of historical complexity; one is built directly into the western portion of the motte itself, whilst another lies approximately 50 metres to the west. These underground stone passages, typically associated with early medieval Irish settlements, suggest the site may have had significance before the Norman arrival and the construction of the motte, or that the area continued to be inhabited and adapted by successive generations.





