Conservationists are hoping to create England’s biggest native woodland by planting 100,000 trees in the Yorkshire Dales.
Snaizeholme, near the town of Hawes, was covered in woodland centuries ago but the 561-hectare valley is now almost barren.
Across the Yorkshire Dales, total tree cover amounts to just 5%, the Woodland Trust said, with ancient woodland – the most beneficial for wildlife – making up just 1% of that cover.