Gwynedd Archaeological Trust
Regional Historic Environment Record

Ty Mawr Burial Chamber, Llanfairpwll

Primary Reference Number (PRN) : 2693
Trust : Gwynedd
Community : Llanfair Pwllgwyngyll
Unitary authority : Ynys Mon
NGR : SH53887214
Site Type (preferred type first) : Neolithic CHAMBERED TOMB
Status : Scheduled Ancient Monument

Description :
Ty Mawr burial chamber comprises a capstone 11ft x 8ft resting on the ground, one upright in situ and two others probably out of position. (RCAHMW, 1937) <2>

A long cairn 15yds x 10 published on this spot on original Ordnance map is no longer visible. <3>

As described by RCAHM. Published survey 25 inch correct. See G. P. <4>

Condition unchanged. 1970. <5>

Ty Mawr. A Neolithic Passage Grave with fallen capstone and a low entrance stone (sill). <6>

Burial Chamber 180m N of Pen y Berth. Massive capstone, two fallen uprights and a number of small stones. Collapse probably caused by the removal of a third upright, the fall of the capstone preventing the removal of the other two. A collapsed megalithic chamber consisting of a capstone and fallen uprights which would have stood about 1.3m high. W end of capstone is resting on the ground and the E end resting on sill stone and two fallen uprights. <8> <2>

Collapsed burial chamber. The massive capstone - 3m x 2.6m lies on two collapsed uprights and an in situ sillstone. Siting difficult to assess as the topography has changed due to the construction of modern roads to SE & SW. The monument stands on a moderate slope and must have been visible principally to the SE. (Smith, 2003)

The collapsed remains of a Neolithic passage grave consisting of a massive capstone, one upright in situ, two fallen uprights and a number of small stones. Scheduled Ancient Monument. (Davidson & Flook, 1994)

The collapsed remains of a simple passage grave. Lynch (1991 , 61) notes that this type of megalithic tomb has a widespread distribution in the Irish Sea area but are never found in large numbers. There are three on Anglesey and they may belong to an early phase of Neolithic settlement on the island. The site consists of a massive capstone, one upright in situ, two fallen uprights and a number of small stones. The tomb would have originally been covered by a stone cairn mound of earth and stone. A passage would have led through the mound into a central chamber covered by the capstone. The entrance appears to have been on the eastern side with a low sillstone marking the boundary between the passage and the chamber.

Several ridges running across the field to either side of the burial chamber are visible on recent aerial photographs. These appear to correspond to disturbance at the time of the construction of the
Llanfairpwllgwyngyll bypass. A rectangular area and two strips appear as lighter coloured areas on aerial photographs taken during the construction of the bypass (aerial photographs held by the planning department of Anglesey Council August 1982, Stereo pair, frames 0/26 and 0/27) suggesting that topsoil may have been removed from these areas. (Hopewell, 2008)

Sources :
Davidson, A. & Flook, H. , 1994 , Ty Mawr Leisure Complex, Llanfairpwllgwyngyll ( © GAT)
Hopewell, D. , 2008 , Menai Site, Ty Mawr, Llanfairpwllgwyngyll ( © GAT)
Pritchard, H. , 1873 , Cromlech at Ty Mawr , Archaeologia Cambrensis : Vol. 13 : p.22-31
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
Baynes, E. N. , 1910 , Transactions of the Honourable Society of Cymmrodorion , <2>
Ordnance Survey , 1967 , SH57SW 1 , <3>
Ordnance Survey , 1970 , SH57SW 1 , <5>
Powell, T. G. E. , 1969 , Megalithic Enquiries in the West of Britain , <6>
Lynch, F. , 1970 , Prehistoric Anglesey , <8>
Ordnance Survey , 1967 , SH57SW 1 , <4>

Events :
40526 : Prehistoric Funerary and Ritual Monument Survey: West Gwynedd/Anglesey (year : 2003)
44253 : Menai Site, Ty Mawr, Llanfairpwllgwyngyll (year : 2008)
40213 : Ty Mawr Leisure Complex, Llanfairpwllgwyngyll (year : 1994)
40527 : Pan-wales Prehistoric Funerary and Ritual Sites Survey: Trial Data Synthesis (year : 2005)

Related PRNs : 302558

Compiled date : 12-03-1987


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 2018 (and in part © Crown, 2018 - as indicated)
This information is supplied for the purposes of personal interest only and may not be used as part of a commercial project.

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