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Iolo Williams explores the wildlife of the Rhydymwyn Valley nature reserve in Flintshire, which used to be a wartime munitions and mustard gas factory.

30 minutes

Last on

Tue 24 Apr 200720:00
BBC Two Wales (Analogue) & Wales only

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Broadcast

  • Tue 24 Apr 200720:00
    BBC Two Wales (Analogue) & Wales only