is a village and community in the north of Cardiff, Wales, north of the M4 motorway in the Taff Valley. It is notable as the location of the hillside landmark, . The population as of the 2011 census was 1871. Toponymy is believed to have obtained its name from the word meaning 'ley land', i.e. 'pasture, grassland or unploughed land'; and , the name of a local family, thus "pasture of ". (See also Tonna.) Overview lies in the River Taff Valley. Its population was 1946 at the 2001 census. is located near Junction 32 of the M4 motorway, east of Bridgend and west of Newport and the A470 trunk road. It is situated north of Cardiff city centre and south of . The surrounding towns and villages are and to the west, Taffs Well and Caerphilly to the north, and and Whitchurch to the south. became part of Cardiff In 1974 when Cardiff expanded northwestwards. Many consider as the entrance to the South Wales Valleys from Cardiff, with its famous landmark, , on a hillside. The main route to the Valleys, and beyond to Mid Wales, the A470, runs alongside the village. To the north of the village is Fforest Fawr, a forest of about run by the Natural Resources Wales. is separated from the rest of Cardiff by the M4 and the A470 to the south and west and hills and forestry to the east. is considered to be part of the Cardiff North Rural Area. is home to a pub, several shops, a football club, a rugby club, a 9-hole golf course, and Library. The Taff Trail cycle route passes through the village, and it is a popular resting point between sections. The Cardiff Railway once ran through . It passed through a tunnel just beneath . Tongwynlais railway station opened in 1911 and closed in 1931. The nearest station on the Coryton Line is Coryton railway station. Radyr railway station is also nearby. Government Senedd Cymru – Welsh Parliament is in the Cardiff North constituency for the , currently represented by Julie Morgan MS, a member of the Welsh Labour Party. Houses of Parliament Cardiff North is currently represented by Anna McMorrin MP, a member of the Labour Party. Local Government - City Council is part of the Whitchurch & Tongwynlais electoral ward of Cardiff City Council and is represented by 4 councillors all of the