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Hatterrall Hill Cross Ridge Dyke is a linear earthwork of Early Medieval date located in the Black Mountains of Monmouthshire, Wales. The monument comprises a substantial bank and ditch system that crosses the ridge of Hatterrall Hill, constructed as a territorial boundary or defensive barrier during the early medieval period. Such cross-ridge dykes are characteristic features of the Welsh borderlands, often marking the boundaries between Anglo-Saxon kingdoms and Welsh territories during the Early Medieval period. The earthwork's position on high ground reflects strategic importance in controlling movement across this upland landscape.
Hatterrall Hill Cross Ridge Dyke is a scheduled monument protected by Cadw under reference MM260. View the official record →
Hatterrall Hill Cross Ridge Dyke is a linear earthwork of Early Medieval date located in the Black Mountains of Monmouthshire, Wales. It is designated a Scheduled Ancient Monument by Cadw under reference MM260.
Hatterrall Hill Cross Ridge Dyke dates from the early medieval period, and is classified as a linear earthwork. It is one of over 32,000 scheduled monuments protected across the UK.
Hatterrall Hill 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 MM260.
Several scheduled monuments lie within 10 km, including The Moat Mound and Bailey Castle, Tre Fedw (4.3 km), Two platform buildings on eastern side of Partrishow Hill (4.4 km), Tramway Embankment of Grosmont Railway (4.9 km).
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