Ceiriog Valley
United Kingdom
The Ceiriog Valley (Dyffryn Ceiriog) is the valley of the River Ceiriog in north-east Wales. It is also (under its Welsh name) an electoral ward of Wrexham County Borough. The ward is the largest ward of the county borough by area and forms a strikingly-shaped salient of the county borough between Powys and Denbighshire.
Data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).