Ancient Monuments

History on the Ground

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Llanrhaeadr-ym-Mochnant Crop Marks west of Meusydd Smithy

A Scheduled Monument in Llanrhaeadr-ym-Mochnant, Powys

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Latitude: 52.8175 / 52°49'3"N

Longitude: -3.2869 / 3°17'12"W

OS Eastings: 313366

OS Northings: 325216

OS Grid: SJ133252

Mapcode National: GBR 6T.VD34

Mapcode Global: WH78V.HF0W

Entry Name: Llanrhaeadr-ym-Mochnant Crop Marks W of Meusydd Smithy

Scheduled Date: 19 December 1977

Source: Cadw

Source ID: 2331

Cadw Legacy ID: DE220

Schedule Class: Monument

Category: Enclosure

Period: Prehistoric

County: Powys

Community: Llanrhaeadr-ym-Mochnant

Traditional County: Denbighshire


The monument comprises the remains of an enclosure, identified only as a cropmark. The cropmark shows a broad, near circular, ditch with a narrow ditch concentrically within, revealed by aerial photography in 1975. Six pits forming a regular hexagon some 6.0m in diameter, is 40m to the east. Also ten post-pits form a circle some 10m in diameter, about 85m to the west. These features may possibly be 'ritual structures' of henge type.

The monument is of national importance for its potential to enhance our knowledge of prehistoric ritual activity. The site forms an important element within the wider later prehistoric context and within the surrounding landscape. The site is well preserved and retains considerable archaeological potential. There is a strong probability of the presence of evidence relating to chronology, building techniques and functional detail.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

Source: Cadw

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