It appears only on the 1914 edition of the Ordnance Survey six-inch map, and even then it seems to have been placed there by the surveyors themselves rather than discovered by them.

The Ordnance Survey of Ireland, in the course of its meticulous nineteenth and early twentieth-century mapping work, occasionally erected small earthen boundary mounds to mark townland or administrative divisions across terrain where no natural or built feature existed to do the job. This appears to be one such mound, set down on the raised bog at Cuilbalkeen, a landscape of deep peat and poor visibility where permanent landmarks were scarce. Raised bogs, built up over thousands of years from compressed sphagnum moss and organic material, are not places that hold features well. Whatever was placed here has since been absorbed, obscured, or simply lost to the bog, and the mound is no longer visible on the ground.