Holed Stone

"I was walking on the western slopes of Croghan Hill at Knockaturnory when I came across this stone lying on part of a stone wall which was more than 1 metre thick".

"The stone with a rough surface, is about 45 cm square and 13 cm in depth.

The circular, hole which is towards one corner, is 5 cm in diameter and also 5 cm deep.

Could it be a Cup - Mark or perhaps some Ritual Stone, maybe a mortar for grinding or was it previously used in modern times as a base support for an iron gate.

The bleak open area in which it was discovered doesn’t suggest that iron gates would have been used here in the past

Also, these is no signs of concrete on the stone which would have been used to secure it in position.. Moreover, the hole appears a bit wider than what would have been used as a socket from which to swing  gate".