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Peatbog near Llansannan with areas of Sphagnum and associated plants

A valley mire once common in the uplands of North Wales.

Blaen-Y-Weirglodd is a wild and remote site protected for its peat bog habitat once common in the upland valleys of North Wales. It is a Site of Special Scientific Interest with a rich variety of bog plants such as sphagnum mosses, round-leaved sundew, bog asphodel, marsh violet, marsh pennywort and bog bean. Snipe are common winter visitors to the reserve and, between late April to July, listen out for grasshopper warbler. Brown hare and stoat are frequently seen at the site and in surrounding fields.

Species and habitats

Snipe, Sphagnum Moss, Bogbean, Round-leaved Sundew, Brown Hare, Stoat

Nearby nature reserves

Gors Maen Llwyd
5 miles - North Wales Wildlife Trust
Cors Bodgynydd
10 miles - North Wales Wildlife Trust
Bryn Pydew
12 miles - North Wales Wildlife Trust

Nature reserve map

Reserve information

2 miles south west of Llansannan
LL16 5LP
Map reference
SH 9139863324
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Public transport
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Opening Times
Open at all times
4.05 hectares

Walking information
Please avoid walking over the bog especially in wet areas. Please keep to the paths. Suitable footwear is needed- wellington boots recommended! The site is not suitable for pushchairs or wheelchairs
Park in layby on roadside
Dogs must be on lead
Grazing animals
Spring & Autumn
Reserve manager
North Wales Wildlife Trust
Tel: 01352 755472


Factsheets and guides for your visit