Mound, Lissadill, Co. Sligo
Co. Sligo |
Ritual/Ceremonial
On a ridge above the pastures of Lissadill in County Sligo sits an oval earthen mound that has quietly accumulated layers of purpose over the centuries.
Measuring roughly 23.6 metres east to west and 18.9 metres north to south, it rises to a height of 2.1 metres at its highest point, with steep sides to the north and south and a more gradual slope running from west to east. Three large stones arranged in a kerb-like setting along the southern side hint at something more deliberate in the mound's origins, though their precise meaning remains unclear. A kerb, in this context, refers to upright or edge-set stones placed around the base or perimeter of a mound, a feature commonly associated with prehistoric burial monuments.
What gives the site an additional layer of historical texture is its appearance on Ordnance Survey six-inch maps from two quite different periods: the original survey of 1836 to 1837, and a later revision carried out between 1940 and 1941. On both, a trigonometrical station is marked at this location. Trigonometrical stations were fixed reference points used by surveyors to calculate distances and map the landscape with precision, and their placement on elevated ground was deliberate. That the mound served this practical cartographic function across more than a century of surveying suggests it was a conspicuous and reliable landmark, its ridge-top position making it visible across a wide area. Whether the surveyors chose it because it was already prominent, or whether their markings have since added to its visibility in the historical record, it now occupies an odd overlap between ancient earthwork and the bureaucratic geometry of nineteenth and twentieth-century mapmaking.