National Nature Reserve
Thrislington National Nature Reserve
Regulations on 30 October 2026
Signs at the site and later resolutions prevail; check the source.
These hold everywhere inside the boundary, whether or not a site is marked.
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Regulated
Hiking · All year
In force on 30 October 2026
Thrislington Plantation NNR is the most valuable wildlife site on County Durham’s magnesian limestone.
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The reserve is adjacent to a working quarry which makes some access restrictions necessary. Organised groups must pre-book. […]
Published by Natural England, 5 Mar 2021 · Durham's National Nature Reserves