Claim: The South Wales Valleys stretch to western Monmouthshire.
Evidence: Commonly referred to locally as The Valleys -LRB- Y Cymoedd -RRB- , they stretch from eastern Carmarthenshire in the west to western Monmouthshire in the east and from the Heads of the Valleys in the north to the edge of the lower-lying , pastoral country of the Vale of Glamorgan and the coastal plain around Swansea Bay , Bridgend , the capital Cardiff , and Newport.