Cnoc na Croiche, anglicised as Knocknacrohy, has long carried associations with death and burial, and it turns out that the landscape itself offers a reason why. Scattered across and around this hill is a cluster of Bronze Age ring-barrows, the circular earthen mounds, typically defined by a central burial area enclosed within a ditch and outer bank, that served as funerary monuments for communities living in Ireland somewhere between four and two thousand years ago. Four of these monuments survive in a loose cemetery grouping here, each set roughly twenty metres apart, a quiet assembly that went unrecognised on any official map until aerial photography began to make such things legible from above.

The barrow covered in these notes sits in pasture, its south-western side cut into by a drainage ditch and field boundary, roughly ninety metres from the townland boundary with Glen in the old Clanwilliam Barony. It does not appear on any historic Ordnance Survey Ireland maps, which suggests it was either too degraded at ground level to record or simply overlooked during earlier surveys. It was first identified as a ring-barrow during examination of the Bruff aerial photographic survey of 1986, a systematic flyover that revealed crop and soil marks invisible to anyone walking the field. Later orthoimage surveys, including those carried out by OSi between 2005 and 2012 and by Digital Globe between 2011 and 2013, confirmed what the 1986 photographs had suggested. The Placenames Database of Ireland notes that the name Knocknacrohy may itself preserve a folk memory of burial on this hill, the association with a gallows perhaps a later rationalisation of a landscape that was, in some older communal awareness, understood to be a place of the dead.

Because the site sits in private agricultural land and was never formally mapped, there is no marked access point or signage. It is the kind of place best appreciated through the aerial and satellite imagery that revealed it in the first place; Google Earth orthoimages taken as recently as November 2018 still show the monument's circular form, albeit with that truncated south-western edge. Anyone visiting the general area should note that what is visible on the ground will be subtle, likely no more than a slight rise or a faint circular cropmark depending on the season and how recently the field has been cut or grazed. Dry summers tend to bring out soil and crop marks most clearly, making late July or August the most rewarding time to look.