Gwynedd Archaeological Trust
Regional Historic Environment Record

Standing Stone, Maen Addwyn

Primary Reference Number (PRN) : 2199
Trust : Gwynedd
Community : Llanddyfnan
Unitary authority : Ynys Mon
NGR : SH46058336
Site Type (preferred type first) : PREHISTORIC STANDING STONE
Status : Scheduled Monument

Description :
Maen Addwyn, erect stone 420 yards SSE of church, 10.5ft high, 3ft 4 inches average width and 2ft 10 inches thick. In good condition. (RCAHMW, 1937)

The standing stone is as described. The Headmaster of the school confirmed the spelling of the name. <2>

Appears on manuscript 2" map from which first published 1" OS Map was drawn up as Maen Fably. On the published 1" map, 'Meini addwyn' (presumably including this and Maen Addwyn) is marked further to the north, near Maenaddwyn crossroad. <4> <5>

Short report of limited excavation and discussion of documentary research. <7>

Erect flat slab on roadside - built into wall. 3m high 1.1m wide 0.7 thick - as described by F. Lynch. Now mostly ivy covered - set at centre of a wide natural basin visible from Bodafon Mountain. (Smith, 2003)

GAT record doesn’t cite article in Arch Camb (Williams, 1867).

Archaeological features have not been identified. Once known as 'Maen Fabli', the original Maen Addwyn stood close to the crossroads. (Longley, 1990)

Sources :
Dickson, C. & Tram, N. , 2015 , Stone, Hilltops, Water and the Sun: A Preliminary Investigation into the Orientations of Standing Stones Near the River Alaw, Anglesey , Archaeology in Wales : Vol. 54 : p. 43-52
Smith, G. , 2003 , Prehistoric Funerary and Ritual Monument Survey: West Gwynedd and Anglesey ( © GAT)
Smith, G., and Steele, N. , 2005 , Pan-Wales Prehistoric Funerary and Ritual Sites Survey: Trial Data Synthesis ( © GAT)
The Royal Commission on the Ancient and Historical Monuments of Wales , 1937 , An Inventory of the Ancient Monuments in Anglesey
Williams, W. Wynn. , 1867 , Mona antiqua: cromlech Bodafon Mountain
Ordnance Survey , 1970 , SH48SE 6 , <2>
Ordnance Survey , 1820 , Ms 2'' for 1'' Published Map , <4>
Ordnance Survey , 1841 , 1st Edition , <5>
Lynch, F. , 1970 , Prehistoric Anglesey , <6>
Longley, D. , 1990 , Archaeology in Wales , <7>
, 1989 , PRN 2199 , <12>

Events :
42283 : Maen Addwyn, Llanfihangel Tre'r Beirdd (year : 1990)
40526 : Prehistoric Funerary and Ritual Monument Survey: West Gwynedd/Anglesey (year : 2003)
40527 : Pan-wales Prehistoric Funerary and Ritual Sites Survey: Trial Data Synthesis (year : 2005)

Related records
National Monuments Record Wales NPRN 302478 https://coflein.gov.uk/en/site/302478/

Compiled date : 17-03-1987


Images :



The above data are supplied by GAT in partnership with its Local Authorities (Anglesey, Conwy and Gwynedd County Councils, and Snowdonia National Park Authority), © GAT 2025 (and in part © Crown, 2025 - as indicated)
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March 29, 2025, 11:56 am - HTML file produced from Gwynedd Archaeological Trust Regional HER
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