Taobh theas de Cheann Heilbhic, i Rinn Ó gCuanach i nGaeltacht na nDéise tá carraig neamhdhíobhálach suite san uisce, ar a dtugtar Carraig a’ Mhadra.
South of Helvick Head, in Rinn Ó gCuanach in Gaeltacht na nDéise there lies a non-descriptive rock in the water adjacent to the townland of Heilvick, which is known as Carraig a’ Mhadra meaning Dog Rock.