This website is an expanding guide to the geology of Anglesey (Ynys Môn), for visitors, students, teachers and researchers. The Isle of Anglesey is the largest of the Welsh islands, situated in the north west corner of Wales. The island covers an area of some 720 square kilometres and it has 201 kilometres of coastline. Follow the links on the website to begin your virtual tour of the island and its fascinating, complex and sometimes controversial rocks!
Geo Mon is an island, and is open 24/7
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.
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