Anglesey who could speak Welsh are as follows: Today, Welsh is less widely used on the island, but it is still the dominant language in certain areas, particularly in the centre, including the town of Llangefni, and some areas of the south coast. A notable example is the village of Llanfairpwll. The island's five secondary schools vary widely in the percentage of their pupils who come from predominantly Welsh-speaking homes, as do the percentages who can speak Welsh: The geology of Anglesey is notably complex and is frequently used for geology field trips by schools and colleges. Younger strata in Anglesey
Holyhead Breakwater Lighthouse approaching Holyhead in the fog would be warned by a bell operated from the lighthouse. In the late 1870s, this was supplemented with rockets which would complement the gun fired from the fog warning station on North Stack, Anglesey. The lighthouse was manned until November 1961, when it was automated. Among the last keepers in the 1950s were Arthur Burgess and David John Williams. The latter later became a speaker for Trinity House giving talks on the service. Like most other lights in Gwynedd, it is now operated from Trinity House's Holyhead Control Centre. Today the upkeep of the lighthouse