South Stack Lighthouse of Anglesey for east-bound ships. It is followed by lighthouses, fog horns and other markers at North Stack, Holyhead Breakwater, The Skerries, the Mice, Point Lynas and at the south-east tip of the island Trwyn Du. The lighthouse is operated remotely by Trinity House. It has been visited by the team at "Most Haunted". Visitors can climb to the top of the lighthouse and tour the engine room and exhibition area. The lighthouse is open seasonally. <br> South Stack Lighthouse The South Stack Lighthouse is built on the summit of a small island off the north-west coast of Holy Island,
North Solitary Island by the NSW Maritime Parks Authority. Rocks on North Solitary Island consist of mudstone and a light green brittle sillicaceous argillite. The argillite probably formed from volcanic ash falls. The strike of the beds is between 120° and 170° with steep dipping to the west. Some beds show graded bedding. Rocks are frequently folded, and there are also several small faults. Tectonically it is part of the Coffs Harbour Block which in turn is part of the New England Orogen. North Solitary Island North Solitary Island is one of the largest islands found off the New South Wales coast and