GeoMôn - Anglesey Geopark

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Anglesey (Môn) is the largest of the Welsh islands, situated in the north west corner of Wales. This internationally recognised Geopark, the first island ever to receive Geopark status, covers some 720 square kilometres and has 201 kilometres of coastline.  With rocks spanning 4 Eras and 12 Geological periods, 1,800 million years of history has fashioned more than 100 rock types. Such is the variety of shapes and types, present through at least 4 mountain building periods (orogenies), that casual visitors and local people alike cannot but marvel at the magnificient colours and structures visible around the coast of this magic isle.

Explore and discover this outstanding geo-heritage, which the island derives its local and regional distinctiveness and character. By taking a tour along the coastine, which is nationally recognised as an area of outstanding beauty, using the prestigous coastal path allows access to 90% of Anglesey's geological highlights. Most of the coast is accessible to all, be it the seasoned walker rambling the entire 125 miles or the casual visitor dipping into one or more of the scenically beautiful 'honeypot' sites along its length.

There are numerous points along the coast and inland that merit inclusion here, and some of the most interesting or accessible have been included in the Geosites section of our website. More detailed foray's can be found by embarking on one of the Geotrails. Geological sites (Geosites) have been selected for scientific quality, rarity, aesthetic appeal and educational value. Their interest may also be archaeological, ecological, historical, or cultural.

Venue Type:

Environmental or ecological centre, Garden, parklands or rural site

Opening hours

The Geopark is open all year round.

Admission charges


Additional info

Anglesey Geopark Centre is open to the public by appointment only.

The Geopark includes stratigraphic and structural Precambrian sites, lower and upper Palaeozoic sites, Igneous sites, Quarternary sites, Soil science sites, and Historic geology sites. There are numerous points along the coast and inland that merit inclusion in the Geoparks 'A' rated sites, where only some of the most interesting or accessible have been included. More detailed foray's into the Geopark can be found in the Geotrails section of the website, produced by the Geopark.

Collection details

Natural Sciences, Film and Media, Archives

Key artists and exhibits

  • Building on its success of 2009 the company is currently developing a new visitor centre at the former Wardens house, Breakwater Park. Adding interpretation boards to key sites, and
  • also are training 12 local guides for Anglesey and the Geopark. These guides will operate strategically around the island delivering walks and tours to the public and groups.
Resources listed here may include websites, bookable tours and workshops, books, loan boxes and more. You may need to scroll down or click on headers to see them all.

Geodiversity and its educational benefits

Education is a key element of Anglesey Geopark. The teaching of geology has declined over the years to such an extent that many universities, colleges and schools no longer include geology in their courses or curricula. However, recent shortages in geologists for the economic and commercial sectors, particularly the oil and gas industry, have provided a much-needed wake-up call. Attempts to reverse the decline have started with the Earth Science Education Unit at Keele University developing geological INSET (In-Service Training) days to equip teachers with more effective geological teaching skills. It is hoped that stimulating interest among teachers will herald a dramatic improvement in the


  • Peter Loader


Enjoy the facinating geology and the magnificient views on this beautiful and spectacular walk in south-west Anglesey.
Llanddwyn Island is a magical place, best seen on a stormy day with the waves raging against wet rocks replendent in a range of hues. On a hot sunny day, it feels like an island in the Aegean! This area records an entire plate tectonic story, from the creation of the ocean floor as a mid-ocean ridge, seen here as pillow lavas, through its journey across the ocean basin where it picked up sediments, to its burial and metamorphism as plates collided and the rocks sank down into a deep ocean trench.


  • Dr John Conway (Royal Agricultural College) and Dr Margaret Wood (Anglesey Geopark)

How to obtain

You can obtain this Geotrail, and others, from our Geotrail section on the website. The Geotrails come fully laminated, so that you can take them with you come rain or shine (cost: £2.00). Watch out for 3G versions of these geotrails coming soon.

GeoMôn - Anglesey Geopark
Anglesey Geopark Centre
Pritchard Jones Institute
LL61 6SY





Tours & Excursions


Dr. Margaret Wood, Managing Director

Sarah Wardlaw, Marketing & Media


01248 440888

All information is drawn from or provided by the venues themselves and every effort is made to ensure it is correct. Please remember to double check opening hours with the venue concerned before making a special visit.