GWYNEDD Archaeological Trust is once again conducting excavation work at the Dinas Dinlle prehistoric coastal hillfort.

This time, the trust is concentrating on the interior of the Gwynedd site, fully excavating the features partially uncovered during its 2019 excavations.

These include the spectacular and well-preserved remains of one of the largest Iron Age roundhouses discovered in north-west Wales.

The project is funded by and in collaboration with Cadw, the National Trust and the CHERISH project (Climate, Heritage and Environments of Reefs, Islands and Headlands). Volunteers and schoolchildren are also helping the trust with its work.

A press release from the trust said: “The fort is falling into the sea, and we are once again focussing our efforts on the side of the hillfort most at risk from erosion.

“Dinas Dinlle coastal hillfort is set in a dramatic location overlooking the sea and Caernarfonshire coastal plain.

“The monument is thought to be late-prehistoric in date, and findings - including fragments of Roman pottery - also suggest occupation in the Roman period.

“In the early 20th century, it formed part of a golf course, whilst during the Second World War, defences were constructed on the northern slopes to protect nearby RAF Llandwrog – now Caernarfon airport.”

The fort is now owned by the National Trust, protected as a scheduled monument, and the hill of glacial sediments on which it sits is a geological site of special scientific interest.