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Offa's Dyke is a late eighth-century earthwork constructed under King Offa of Mercia, forming a substantial linear barrier across the Welsh-English border. This particular section, located south of Careg-y-Big in Shropshire, extends approximately 230 metres and preserves the characteristic form of the monument: a substantial bank with an accompanying ditch, which in places reaches heights of up to 7 metres. The dyke was built as a territorial and defensive boundary during Offa's reign in the late 700s, marking the limits of Mercian control and influence. This section represents one of many surviving stretches of what was originally a far more extensive frontier work stretching across the borderlands between the Anglo-Saxon kingdom of Mercia and the Welsh kingdoms to the west.
Offa's Dyke: section 250yds (230m) long, S of Careg-y-Big is a scheduled monument protected by Historic England under reference 1006264. View the official record →
Offa's Dyke is a late eighth-century earthwork constructed under King Offa of Mercia, forming a substantial linear barrier across the Welsh-English border. It is designated a Scheduled Ancient Monument by Historic England (NHLE) under reference 1006264.
Offa's Dyke: section 250yds (230m) long, S of Careg-y-Big is a Scheduled Ancient Monument, legally protected by Historic England (NHLE) — the body responsible for designating and safeguarding heritage sites in England. The official designation reference is 1006264.
Several scheduled monuments lie within 10 km, including Offa's Dyke: section 50yds (45m) long, SW of Crane Rock (6 km), Offa's Dyke: section 220yds (200m) long, N from Royal Oak Inn, Treflach Wood (6.4 km), Offa's Dyke: section 200yds (180m) long, S of The Royal Oak Inn (6.7 km).
This page is just one thread. A full Aubrey report pulls together 15 strands of Offa's Dyke: section 250yds (230m) long, S of Careg-y-Big's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Offa's Dyke: section 250yds (230m) long, S of Careg-y-Big stands on Dinantian Rocks (Undifferentiated), bedrock that formed in the Mississippian. The rock here is limestone with subordinate sandstone and argillaceous rocks.