West Mouse

Carmel Head (Welsh: Trwyn y Gadair) is a prominent coastal headland on the northwest tip of the island of Anglesey. It is a designated SSSI because of its geological interest for the Carmel Head Thrust fault where Precambrian rocks have been pushed over younger Ordovician rocks creating the Carmel Head thrust. Rock exposures along the cliffs of Carmel Head include Precambrian gneisses, which are almost certainly the oldest rocks in Wales. In the summer months the Anglesey Coastal Path passes over Carmel Head on a permissive path but in winter the path is closed to all for pheasant shooting. Most of the land on the head, which peaks at 81 metres above sea level, is owned and managed by the National Trust.

Llanfair-yng-Nghornwy (, also spelt Llanfairynghornwy) is a village in Anglesey, in north-west Wales. A sparsely populated parish, it contains two well known geographical features; Carmel Head and, offshore, The Skerries islands with their lighthouse. Until 1984, Llanfairynghornwy was a community. Today it is part of the community of Cylch-y-Garn.

Henborth is a Site of Special Scientific Interest (or SSSI) in Anglesey, North Wales. It has been designated as a Site of Special Scientific Interest since October 1989 in an attempt to protect its fragile geological elements. The site has an area of 10.96 hectares and is managed by Natural Resources Wales.

St Rhwydrys's Church is a medieval church near the village of Cemlyn on the Isle of Anglesey in Wales. The building dates from the mid-12th century and underwent renovations in the 19th century. It was designated a Grade II*-listed building on 12 May 1970.

Caerau, Cylch-y-Garn is an area in the community of Cylch-y-Garn, Isle of Anglesey, Wales.

Clegir Mawr is a Site of Special Scientific Interest (SSSI) in the community of Cylch-y-Garn in the north-west of the island of Anglesey, Wales. It is a stony coastal headland with an area just under 10 hectares (25 acres) and has been designated principally because of the occurrence of the spotted rock-rose (Tuberaria guttata) which is a nationally rare plant and also the county flower of Anglesey.

Cemlyn Lifeboat Station was located on the west side of Cemlyn Bay, near the village of Cemlyn, on the north coast of Anglesey, Wales. A lifeboat was first stationed at Cemlyn by the Anglesey Association for the Preservation of Life from Shipwreck in 1828. Management of the station was transferred to the Royal National Lifeboat Institution (RNLI) in 1855. Cemlyn Lifeboat Station was closed in 1919.

Cemlyn is a hamlet in Anglesey, in north-west Wales. It lies near Cemlyn Bay. It is in the community of Cylch-y-Garn.

SS Castilian was a British cargo steamship and is now a dangerous wreck in the Irish Sea off the coast of North Wales. She was built in 1919 to a standard First World War design. In 1943 while carrying munitions she struck rocks off The Skerries, Isle of Anglesey and sank. An exclusion zone under section 2 of the Protection of Wrecks Act 1973 (Prohibition on approaching dangerous wrecks) forbids scuba diving within 500 metres (1,600 ft) of the wreck because her explosive cargo remains dangerous.

Cemlyn Bay is a bay on the northwest coast of Anglesey, North Wales, approximately 2.5 km west of Wylfa nuclear power station, within the community of Cylch-y-Garn. Separated from the bay by a shingle beach is a brackish lagoon, which is fed by a number of small streams. A weir at the western (Bryn Aber) end of the beach regulates the lagoon's water level. The site was designated a Site of Special Scientific Interest in 1957, and is currently part of the Anglesey Heritage Coast and the Isle of Anglesey Area of Outstanding Natural Beauty. The Cemlyn estate is owned by the National Trust; the lagoon and its immediate surrounds comprise Cemlyn Nature Reserve (25.2 ha in extent, set up in 1971 and leased by the North Wales Wildlife Trust). The Anglesey Coastal Path passes through it.

Church Bay (Welsh: Porth Swtan) is a settlement on the north-west coast of Anglesey, Wales, United Kingdom, about a mile and a half north-west of the village of Llanfaethlu. The bay shores are rocky but there is also a sandy beach which is popular with visitors. There are a handful of houses near the beach. The Anglesey Coastal Path runs along the cliff tops. There are records of the Swttan settlement going back to the reign of King Henry VIII, but there has probably been a settlement there for many centuries before this. Most of the properties are holiday homes for rent. Amenities include a cafe and a small museum based in a preserved 17th-century thatched cottage. This cottage's position could indicate that there has been a dwelling on this site since Neolithic times. The cottage won the Rural Wales Award from the Campaign for the Protection of Rural Wales (CPRW) in 2003.There is also a ruined windmill, Melin Drylliau (Caerau Mill), first recorded in 1840 and destroyed in a fire in 1914. It was built and owned by the Williams family who owned a number of mills across the island. The nearby sandy beach is named Porth Swtan (Port Whiting). The 61 bus route from Holyhead to Amlwch stops infrequently in the area.

Cylch-y-Garn is a community in Anglesey, Wales, located on the north west coast of the county, 9.0 miles (14.5 km) west of Amlwch, 12.5 miles (20.1 km) north east of Holyhead and 15.0 miles (24.1 km) north west of Llangefni. It includes the villages of Llanfair-yng-Nghornwy, Llanrhyddlad and Rhydwyn, plus Llanrhwydrys, Caerau and Cemlyn. the north west tip of the island at Carmel Head, and the offshore islands of the Skerries and West Mouse. At the 2001 census the community had a population of 675, increasing to 758 at the 2011 census. St Mary's Church at Llanfair-yng-Nghornwy is of early medieval origin and has a chancel arch dating from the 11th or 12th century. It is mentioned in the Norwich Taxation of 1254. The chancel was lengthened in the 15th century, and a south chapel added in the 16th. The west tower was added in the 17th century, and the church was restored in 1847, and again in both 1860 and the 1930s. Cadw considers it to be "a fine rural parish church, incorporating significant early medieval fabric", and claims that it is "of special interest, therefore, both for its early origins and for the quality of its later detail," and it is Grade I listed. Saint Rhwydrus's Church, near Cemlyn Bay, was also built in the 12th century, but only the nave survives, although of particular interest is a doorway to the nave dating from that period. It is Grade II* listed, as is Caerau, a late 17th-century house in Llanfair-yng-Nghornwy which contains original panelling. Cemlyn Bay is located in the north east of the community, and is owned by the National Trust. It is the site of a nature reserve managed by the North Wales Wildlife Trust, which includes a lagoon separated from the sea by Esgair Gemlyn, a shingle ridge formed by longshore drift. Islands in the lagoon provide nesting sites for common and Arctic terns, and for one of the United Kingdom's largest breeding populations of Sandwich terns. Offshore, the Skerries lie north west of Carmel Head at the end of a submerged reef which lies directly in the path of shipping traveling between Liverpool and Ireland. In 1714 Queen Anne granted William Trench the right to build a lighthouse on the rocks, and to levy dues on passing ships. The light came into operation in 1717, but ship owners evaded payment, and Trench died in 1729, heavily in debt. The lighthouse was eventually bought by Trinity House in 1841, the last privately owned lighthouse in the British Isles purchased by the organisation. The coal grate was replaced by an oil lamp in 1804, and converted to electric operation in 1927. Since 1987 it has been unmanned, and controlled automatically from Harwich.