We use cookies to provide you with the best experience on our website. No personal information is stored. If you continue without changing your cookie settings, we'll assume that you are happy to receive all cookies on the website. Please refer to our privacy statement for further information on our cookies.

Countryside Council for Wales (CCW) home page | Sponsored by Welsh Assembly Government NRW Logo

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.

Newborough Warren-Ynys Llanddwyn

This site is notified for its geological, geomorphological and biological interest. Ynys Llanddwyn has some of the best examples of ancient pillow lavas preserved in Great Britain. The site also displays coastal landforms and the processes controlling beach and dune development. The site has a number of intertidal and coastal features including important sand dunes. Newborough Warren - Ynys Llanddwyn also support a number of rare plants and insects, and provides for a number of bird species. Red squirrels are also present in the woodland.

Newborough Warren Ynys Llanddwyn SSSI aerial photo

© This orthophotography has been produced by COWI A/S from digital photography captured by them in 2006. Licensed by the Welsh Assembly Government's Department for Environment, Planning and Countryside.

Managing this site

This site is owned by private individuals and a number of public bodies. 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

The site includes the Newborough Warren - Ynys Llanddwyn National Nature Reserve and a large area of CROW open access land managed by the Forestry Commission. The Isle of Anglesey Coastal path crosses a large proportion of the site. For detailed maps and information regarding access visit our access map via the resource section below.

Other information

The site forms part of Glannau Môn: Cors heli / Anglesey Coast: Saltmarsh and Y Twyni o Abermenai i Aberffraw/ Abermenai to Aberffraw Dunes Special Areas of Conservation. The new borough was established for the displaced burgesses of Llan-faes when Edward I established Beaumaris in 1294. The place-name Newborough was cymricized as Niwbwrch, a very close representation of Newborough in 14th century English. Ynys Llanddwyn is ynys ‘island’ while Llanddwyn is llan ‘church’ and the per sonal name Dwyn. A variant of Dwyn was Dwynwen with gwen ‘blessed, holy’. Dwynwen came to be regarded as the Welsh patron saint of lovers, with her well and church becoming centres of pilgimages. The island itself was once a harbour.




Access map

This is a link to Outdoor Wales on Line

Newborough Warren - Ynys Llanddwyn National Nature Reserve

This is a link to the Newborough Warren - Ynys Llanddwyn National Nature Reserve page

Our other sites

Follow Us


twitter logo


Follow our tweets


Youtube Logo


Subscribe to our channel


Flickr Logo


Browse our gallery


Designated Sites Search

Advanced Search
Contact the Team
Email address
Postal address
The landscapes team [SSSI]
C/O Enquiries
LL57 2DW
Telephone number
0845 1306229
Page feedback