1 the valleys of wales, ex-mining areas usually with a lot of poverty and drug problems and crime.
2 people from the valleys of Wales. they normally go into town (Cardiff or Swansea), every Friday night, drink copious amounts of beer, letch, and start fights (the Valley Girls usually worse than the Valley Boys). Battle scars and pub bans worn with pride. Usually chavs, or slightly classier ones townies.
don't go into Cardiff on a Friday night, it's full of valleys