Blaenau Gwent (pronounced /ˌblaɪnaɪ ˈɡwɛnt/, Welsh: [ˈbləɨ.naɨ]) is a county borough in South Wales, sharing its name with a parliamentary constituency. It borders the unitary authority areas of Monmouthshire and Torfaen to the east, Caerphilly to the west and Powys to the north. Its main towns are Abertillery, Brynmawr, Ebbw Vale and Tredegar. Its highest point is Coity Mountain at 578 metres (1,896 ft).