Quiz: Remember the definition of mal de mer?
historic county, southern Wales, extending inland from the Bristol Channel coast between the Rivers Loughor and Rhymney. In the north it comprises a barren upland moor dissected by narrow river valleys. Glamorgan's southern coastal section centres on an undulating plain known as the Vale of Glamorgan and extends into the Gower Peninsula. The historic county comprises the following administrative units: Swansea city and county, Vale of Glamorgan county, the county boroughs of Bridgend and Neath Port Talbot, most of the county of Cardiff and the county boroughs of Rhondda Cynon Taff and Merthyr Tydfil, and part of the county borough of Caerphilly