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Helen Mark is in County Down, where woodland which has been in private hands for centuries is being opened up to the public. Mourne Park was owned by the same family for five hundred years, but has now been bought by the Woodland Trust. Restoration work is underway at the 385 acre site - clearing invasive plants which have smothered some of the ancient trees, and marking out new walking trails for visitors. Almost half the forest here meets the criteria to classify as ancient woodland, which is one of Northern Ireland's rarest habitats.

Helen also finds out about recovery work going on to restore the land after last year's devastating wildfires in the Mourne mountains, and learns how sheep are helping the National Trust to monitor the recovery of the landscape, by wearing GPS trackers attached to special collars.

En route she encounters St Patrick’s Way – an 82-mile walking trail which spans two counties and connects Christian heritage sites between Armagh and Downpatrick. Helen walks a section of the route, with a journalist-turned-nun as her guide.

Presented by Helen Mark and produced by Emma Campbell.