12Grinsell, L.V. "Some Aspects of the Folklore of Prehistoric Monuments." Folk-lore 48 (1937): 252-53.
An author in 1912 suggested that passing an infant through the aperture in an ancient stone, "...may be an echo of a rite of symbolic rebirth." (Ffrench, J. F. M. Prehistoric Faith and Worship: Glimpses of Ancient Irish Life.. London: D. Nutt, 1912. 25-6.)