Category 7: Coastal

The UK and Ireland have stunning coastlines, featuring a wide variety of coastal geosites, including beaches, cliffs, coves and arches – perfect for a geological day out!
Click on the links below to find out about each Geosite:
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Giant’s CausewayCounty Antrim, Northern Ireland This famous site features thousands of distinctive hexagonal shaped basalt columns, formed about 60 million years ago during the formation of the North Atlantic Ocean ![]() |
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Cliffs of MoherCounty Clare, Ireland Standing at 214m, these magnificent cliffs stretch for 5 miles along the Atlantic Coast and are Ireland’s most visited natural attraction. ![]() |
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Hunstanton CliffsNorfolk, England These colourful, stripy cliffs are noted for their fossils, and the contrast between the red limestone, known as ‘red chalk’, topped by a white chalk layer. ![]() |
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Seven Sisters & Beachy HeadEast Sussex, England These iconic cliffs are part of the South Downs and are formed from Chalk. At their base, there are several chalk reefs, some of the best in the UK and Europe. ![]() |
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Sango Bay & Smoo CaveDurness, Highlands, Scotland Sango Bay isn’t just a beautiful beach, it is also home to one of the finest fault planes in the British Isles. The nearby Smoo Cave is an interesting geological formation and an important archaeological site. |
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Mizen HeadCounty Cork, Ireland Mizen Head is located at the extremity of a peninsula in County Cork and is a popular tourist attraction, noted for its dramatic cliff scenery. ![]() ![]() |
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AchmelvichSutherland, Scotland The rocks found here form part of the stunning scenery along the northwest coast and exhibit fascinating deformation. ![]() |
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Cliffs of Slieve LeagueCounty Donegal, Ireland The cliffs at Slieve League are the highest sea cliffs in Ireland at 601m. They form part of the International Appalachian Trail, as they can be directly correlated with rocks found in Newfoundland, Canada. |
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Barafundle Bay & Stackpole QuayPembrokeshire, Wales Barafundle bay is a small gem of a beach and nearby Stackpole Quay provides an opportunity to study folding and faulting at this spectacular outcrop. ![]() ![]() |
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LulworthDorset, England The Lulwoth site features both the popular rocks of Lulworth Cove and the Durdle Door formation, a must-visit site for any budding geologist! |