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Countryside Council for Wales
Home Page Please note - A new body, Natural Resources Wales has taken over all functions and services previously carried out by Countryside Council for Wales. While the Natural Resources Wales website continues to be developed, some online services will continue to be provided on this web site.

Cors Erddreiniog

A large wetland, mostly National Nature Reserve, and the jewel in the crown of the Anglesey fens. The site boasts large areas of calcareous fen with great fen sedge, black bog rush, bog myrtle, southern damselfly, wintering hen harriers and marsh gentian.

Cors Erddreiniog SSSI Aerial Photo

©Infoterra Ltd 2010

Managing this site

The site is privately owned. The special features of this SSSI and CCW’s views about site management have been summarised in a Site Management Statement, addressed to the owners and managers of the land. The statement can be found in the resource section below.

Access information

Access is obtainable from Capel Coch, to the west of the site, and there are new boardwalks being provided. For detailed maps and information regarding access visit our access map via the resource section below.

Other information

Cors Erddreiniog forms part of the Corsydd Môn/ Anglesey Fens Special Area of Conservation and also forms part of Corsydd Mon a Llyn/Anglesey and Llyn fens Ramsar site. Cors Erddreiniog is also National Nature Reserve. Cors means ‘bog’. Erddreiniog, also the name of a medieval township, is of uncertain meaning but may be based on dreiniog ‘prickly, thorny’.




Access map

This is a link to Outdoor Wales on Line

Cors Erddreiniog National Nature Reserve

This is a link to the Cors Erddreiniog National Nature Reserve page

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The landscapes team [SSSI]
C/O Enquiries
LL57 2DW
Telephone number
0845 1306229
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