Killuken, county Roscommon.
In a field on the roadside from Carrick to Croghan, on the left hand, is a long stone set up obliquely. The common people call this Cloghcom, i.e., the crooked stone, and say that it was thrown there from the top of Skimore, in the county of Leitrim (a distance of about seven miles), by the Giant Fin mac-Coole, the print of whose five fingers they say is to be seen in it.
Taken from ‘A statistical account or parochial survey of Ireland, drawn from the communications of the clergy, by William Shaw Mason. 1814-1819.
Quoted on p333 of
Irish Folk-Lore. [Continued]
William Shaw Mason
The Folk-Lore Journal, Vol. 5, No. 4. (1887), pp. 331-335.
Kindly identified by Ryaner – many thanks.