This one is remarkable for what does not. On flat, reclaimed grassland about sixty metres west of the River Gaine in Knightswood townland, County Westmeath, a small burial mound once sat in the landscape, its rounded top of loose, mortarless stones just visible through the grass. By the time anyone went looking for it in earnest, it had almost certainly been erased entirely.

When surveyors recorded the site in March 1972, they described an approximately circular, grass-covered mound of small stones, with no mortar binding them, a detail suggesting considerable age and hinting at a prehistoric cairn, a type of stone-built burial monument found widely across Ireland. It appeared to be one of at least two such features in the townland, sited roughly a hundred metres north of a companion mound. The relationship between the two was noted but left open. Four decades later, when David McGuinness surveyed the area in 2012, neither this mound nor the cairn to its south could be located after a thorough search. His conclusion was that they had likely been destroyed, much as a ring-barrow in the same townland had been. A ring-barrow is a low circular earthwork, typically of Bronze Age date, defined by a bank and sometimes a ditch, and their loss from the Irish landscape through agricultural improvement and land drainage has been a recurring pattern across the midlands. The Knightswood mound, whatever its precise character and date, appears to have followed the same fate.