2Frazer, W. "On "Holed and Perforated Stones in Ireland." The Journal of the Royal Society of Antiquaries of Ireland Fifth 6.2 (1896): 165-66.
While modern sources state the height of the stone to be 2 m (6.6 ft), older writers such as Frazer and Petrie wrote of it as being up to a meter taller. It is unclear what would explain the discrepancy. Has the stone sunk into the waterlogged ground? Has the bog grown up at its base? Or has the top part of the stone been somehow removed?