Forestry workers have begun to fell hundreds of acres of trees in the largest ancient woodland in Wales because they have been infected by a fungal disease.
It is spreading through thousands of larch trees that are growing in the historic Wentwood Forest between Newport and Chepstow.
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Low cloud will bring murky conditions with extensive hill fog.
The team, which is manned by volunteers, will operate out of Pontardawe Fire Station in partnership with Mid and West Wales Fire Service.
Dan Biggar has no doubt that Wales remain flrmly in the Six Nations title mix ahead of next Saturday's clash against Scotland.