These two huge obelisks, the Coal Rock Beacons, locally known as the Two White Ladies are 45ft tall stone navigation marks set on the hillside at Carmel Head, North Anglesey. They were erected by the Mersey Docks & Harbour Board as an aid to shipping navigating to Liverpool docks.
These days in the age of electronic & satellite navigation they are far less relevant, but walking past them, isolated on these near deserted cliffs, they are surreal and imposing and reminiscent of scenes form the film 2001 - A Space Odyssey!