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Ffos Toncenglau is a prehistoric cross ridge dyke located in Glamorgan, Wales, and forms part of the defensive earthwork systems constructed during the Iron Age. The monument consists of a linear ditch and bank formation designed to block passage across a ridge, representing a characteristic example of cross ridge dykes that controlled movement and defended settlements or territories in prehistoric Wales. Such dykes typically date to the Iron Age period, though some may have origins in the Bronze Age, and served strategic defensive purposes across the Welsh landscape. The earthwork remains visible as an archaeological feature within the Glamorgan uplands, contributing to understanding of prehistoric settlement patterns and territorial organisation in Iron Age Wales.
Ffos Toncenglau cross ridge dyke is a scheduled monument protected by Cadw under reference GM118. View the official record →
Ffos Toncenglau is a prehistoric cross ridge dyke located in Glamorgan, Wales, and forms part of the defensive earthwork systems constructed during the Iron Age. It is designated a Scheduled Ancient Monument by Cadw under reference GM118.
Ffos Toncenglau cross ridge dyke dates from the prehistoric period, and is classified as a cross ridge dyke. It is one of over 32,000 scheduled monuments protected across Britain.
Ffos Toncenglau cross ridge dyke is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is GM118.
Several scheduled monuments lie within 10 km, including Earthwork 360m NNE of Crug yr Avan (6.4 km), Crug yr Afan Round Cairn (6.8 km), Bwlch yr Avan Dyke (7.1 km).
Aubrey generates in-depth historical research for any address in Britain — drawing on scheduled monument data, Domesday records, Roman heritage, PAS finds and medieval history to reveal the complete story of a landscape.
Research the area around Ffos Toncenglau cross ridge dyke