Cloch-a-Phoill, Ardristan, Tullow. Co. Carlow. South of Tullow in Ardristan lies Cloch-a-Phoill, a large holed stone of great antiquity which may have once been part of a megalithic tomb. For over 2,000 years it was believed that sick infants if passed through the six inch hole would be restored to health. Access off the N81 Tullow/Bunclody Road appromimately 5km from Tullow (well signposted).