Cloyne is situated on a low hill just over sea level. This hill is riddled with cracks and joints. One of the mysteries of Cloyne is how it is that major buildings such as the Cathedral, Cloyne House and especially the Round Tower had foundations built “on the solid” away from cave passages. Were there cave explorers all those centuries ago? Or indeed was there a succession of cathedrals and round towers until solid ground was discovered by trial and error?
The Cloyne caves are the most extensive in County cork, consisting of a very complex series of mazes over an area of 7 or 8 acres, where in excess of 3,300 metres of main passages have been actually surveyed.