This is Cwm Darren Parc, outside Bargoed, in the Rhymney Valley. If you Google Earth this location you will see what it looked like whilst in the process of being landscaped.
Again a former mining area which has been landscaped. Now that heavy industry has disappeared, all the Welsh mining valleys have reverted back to what they must have looked like 200 years ago. I doubt though that it looked exactly like this, but its a vast improvement from 50 years ago.