" This, as far as I can discover, was the first concrete step taken in Wales towards reintroducing an extinct mammal. Here, at Blaeneinion, at the source of the stream which runs through the stunning Cwm Einion into the Dyfi estuary, a group of volunteers had enclosed three acres of land around an old carp pond. People had been talking about returning the beaver to Wales for years. Now, at last, something was happening. "

― George Monbiot , Feral: Rewilding the Land, the Sea and Human Life