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Coastal erosion prompts public participation

There are an incredible number of prehistoric coastal forts dotted along or near the Pembrokeshire Coast Path in the Pembrokeshire Coast National Park, with one at Porth y Rhaw near Solva coming under close scrutiny.

The National Park Authority’s Changing Coasts project is recording coastal change from 16 fixed point photography posts along the Pembrokeshire coastline, including a post which has been fixed above the prehistoric site at Porth y Rhaw, a scheduled monument.

Walker takes photo at Changing Coasts post at Porth y Rhaw
A walker above Porth y Rhaw near Solva records a photo for the National Park Authority’s Changing Coasts project.

The National Park Authority Volunteering Development Officer Rebecca Evans said: “We are hoping people walking this popular part of the Pembrokeshire Coast Path will stop and help us record this fascinating site, which has signs of occupation from the Mesolithic period up to around 1915, when a working mill was stood down.”

“The Changing Coasts project helps us to record changes and builds an invaluable picture at this and other coastal sites of cliff erosion, changing vegetation and sand levels.

“It’s very simple, take a picture from your phone from a Changing Coasts fixed post, and email it to”

The Porth y Rhaw site was first described formally over 200 years ago, and over the past few decades the Dyfed Archaeological Trust undertook archaeological investigation there. This has been more recently followed by excavations at the site earlier in 2019 through collaboration between the National Trust, Cadw and the Dyfed Archaeological Trust.   

The post at Porth y Rhaw was funded in collaboration with the Climate, Heritage and Environments of Reefs, Islands and Headlands (CHERISH) project, a European-funded project led by the Royal Commission on the Ancient and Historical Monuments of Wales.

For more information on the exact location of Porth y Rhaw and other Changing Coasts post sites, please visit

Published 23 September 2019

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