Ancient Monuments

History on the Ground

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Pen-yr-Orsedd Standing Stones

A Scheduled Monument in Cylch-y-Garn, Isle of Anglesey (Ynys Môn)

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Latitude: 53.3856 / 53°23'7"N

Longitude: -4.5068 / 4°30'24"W

OS Eastings: 233378

OS Northings: 390562

OS Grid: SH333905

Mapcode National: GBR HM7R.JC5

Mapcode Global: WH424.R53D

Entry Name: Pen-yr-Orsedd Standing Stones

Scheduled Date:

Source: Cadw

Source ID: 2532

Cadw Legacy ID: AN081

Schedule Class: Religious, Ritual and Funerary

Category: Standing stone

Period: Prehistoric

County: Isle of Anglesey (Ynys Môn)

Community: Cylch-y-Garn

Traditional County: Anglesey


The monument comprises the remains of two standing stones, which probably date to the Bronze Age (c. 2300 - 800 BC).

The stones lie approximately 250m apart. The northern stone stands just below the crest of a low hill. It is 3.75 m high, 1.5 m wide and 0.6 m thick. The southern stone is impressively tall, about 3 m; about 1.4 m wide, but only about 0.25 m thick. It is oriented with the narrow sides facing north-east and south-west.

The monument is of national importance for its potential to enhance our knowledge of prehistoric burial and ritual practices. It is an important relic of a prehistoric funerary and ritual landscape and retains significant archaeological potential. There is a strong probability of the presence of intact burial or ritual deposits, together with environmental and structural evidence. Standing stones are often part of a larger cluster of monuments and their importance can further enhanced by their group value.

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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