In the parish of Aghade, Co. Carlow, is a stone called Cloghafoyle, the 'Stone of the hole.'
'It projects in a semi-recumbent position 7 feet 6 inches above ground, is 5 feet 8 inches in width, 1 foot 6 inches in its thickest part, and is pierced - nearly equally distant from the sides and top - with a round hole 11 1/2 inches in diameter. Formerly children were passed through this aperture, either as a cure for, or a preventative against, the malady called rickets.' (Journal Roy. Soc. of Antiq. Ir., 1888, p470).
From 'Wakeman's Handbook of Irish Antiquities', by John Cooke (1903).