This one, sitting on a natural hillock amid low-lying wet pastureland in Grangestown, County Westmeath, survives only in part, its earthen bank and shallow external fosse, the ditch that once ran around the outside of the enclosure, still legible across the southern, western, and northern arcs of the site. To the east, the monument has been quarried away, the original bank and fosse replaced by later banks and depressions that speak more to post-medieval industry than to early medieval habitation. The Yellow River runs some seventy metres to the north-east and east, and a second ringfort sits roughly a hundred and forty metres to the north-west, suggesting this corner of Westmeath was once meaningfully settled ground.

By 1837, when the Ordnance Survey produced its six-inch map of the area, the site had already been compromised. The cartographers recorded a circular earthwork with a pathway entering from the north and a gravel pit occupying the southern quadrant within the enclosure itself. On the OS Fair Plan map, the annotation reads simply 'Fort & G. Pit', a matter-of-fact description that captures the strange coexistence of an ancient monument and an extractive enterprise. Gravel quarrying appears to have reshaped the eastern sector of the site significantly, hollowing into the raised interior as well as removing the bank. The sub-circular form that survives measures approximately fifty-one metres north to south and thirty-six metres east to west, dimensions that place it within the range of a typical rath, the earthen type of ringfort constructed across Ireland during the early medieval period, broadly between the fifth and twelfth centuries, and generally associated with farmsteads of the landowning class.