Editing Runnel Stone (section)

====Day markers on Tol-pedn====
[[File:Gwennap head daymarks.jpg|thumb|right|Couple of [[daymark]]s on [[Gwennap Head]]: when the red cone obscures the black and white one, the observer at sea is directly above the stone]]
On the mainland, there is a pair of cone-shaped [[Daymark|navigation markers]] on [[Gwennap Head]], in line with the Runnel Stone buoy. These are day markers warning vessels of the hazard of the Runnel Stone. The cone to the seaward side is painted red and the inland one is black and white. When at sea the black and white one should always be kept in sight in order to avoid the submerged rocks nearer the shore. If the black and white cone is completely obscured by the red cone then the vessel would be directly on top of the Runnel Stone. The landmark was erected by the [[Trinity House|Corporation of Trinity House]] in 1821 – an event recorded on a plaque on the back of the black and white marker.<ref name=gendall/>