Decommissioned explosives works, now with a new lease of life as a nature reserve. Compact, accessible, and with great views of the Dwyryd estuary and Snowdonia, the site is now protected due to its numerous bat roosts. It is also excellent habitat for reptiles such as grass snake and slow worm.


On the road to Harlech and behind Cookes Industrial Estate, overlooking the Dwyryd estuary.
LL48 6LY

OS Map Reference

A static map of Gwaith Powdwr

Know before you go

24 hectares

Entry fee


Parking information

Either on the industrial estate itself or by the bridge over the Dwyryd River.

Grazing animals

Sheep - all year round.

Walking trails

Tarmac paths through most of site. Some steps and rough sections of path over the heathland.


Suitable for pushchairs and wheelchairs (please contact us for the gate code in advance).


On a lead

When to visit

Opening times

Open at all times

Best time to visit

All year round

About the reserve

A fantastic example of a place where wildlife can thrive in a post-industrial setting. Gwaith Powdwr was once the biggest explosives works in Europe. It was donated to the North Wales Wildlife Trust by ICI in 1998 and is now managed as a nature reserve. The reserve offers fabulous views of Snowdonia and the Dwyryd Estuary, and the many paths throughout the site offer excellent access. 

Contact us

North Wales Wildlife Trust - Rob Booth
Contact number: 01248 351541

Environmental designation

Site of Special Scientific Interest (SSSI)
Special Areas of Conservation (SAC)