¹⁹Ó Ríordáin, Seán P. "Lough Gur Excavations: The Great Stone Circle (B) in Grange Townland." Proceedings of the Royal Irish Academy. Section C: Archaeology, Celtic Studies, History, Linguistics, Literature 54 (1951/1952): 42-44.
At the exact center of the circle the excavations discovered a post-hole 12.7 cm (5 in) in diameter. "Two suggestions have been made regarding the purpose of this posthole--that it carried a central wooden post, a sort of totem-pole, connected with the ritual of the site and that it held the pole from which the builders marked out the circle. The latter practical alternative appears to be the more likely."