Gwynedd Archaeological Trust
Regional Historic Environment Record

Burial Chamber, Glyn, Benllech

Primary Reference Number (PRN) : 3602
Trust : Gwynedd
Community : Llanfair-Mathafarn-Eithaf
Unitary authority : Ynys Mon
NGR : SH51428172
Site Type (preferred type first) : Neolithic CHAMBERED TOMB
Status : Scheduled Ancient Monument

Description :
In May 1909 the chamber was excavated, but it soon became evident that treasure seekers had cleaned out the whole of the chamber. As it seems useless to continue operations, work was abandoned, but as some clearing had been done a few points could be noted. Only the S supporter remained in position. It rests on the limestone rock and is about 20in high. The only other visible support is by some built up stones opposite the entrance, not a usual method for supporting the capstone. <1>

A single undivided burial chamber, mainly formed from a natural hollow in the rock to which additional height has been given by inserted limestone blocks, on which rests the large coverstone, 7 1/2ft by 14 1/4ft, now broken into two. The W end of the chamber and part of the N and S sides are obscured by a filling of stone and earth. A slight rise of ground about the structure may represent the remains of a covering mound. Condition: fair. (RCAHMW, 1937)

SH 51428172 Burial chamber (LB). <3>

As described. Published survey 25" revised. <4>

Somewhat overgrown (by blackthorn) burial chamber in a rather straggly hedge next to a field boundary. Capstone 3.6 + 1m broken off x 1.6 to 0.6 x 0.8 thick, - limestone. The capstone is elongated and has fallen from its supports on the western side. 1m of the north side has broken off. It is supported on the north by a limestone upright and partially on the south by a large block. The chamber is open beneath the widest part of the capstone and filled with stone and sand beneath the broken portion and the west end. A slight rise in the field around the stones could be the remains of a 14m diameter mound. Siting: On the eastern edge of a limestone terrace now defined by the field wall. Site visible from all but the uphill north west. (Smith, 2003)

The monument comprises the remains of a burial chamber, probably dating to the Neolithic (c. 4400 - 2900 BC). It is located in an enclosed field of pasture on a gentle SE-facing slope at the edge of a limestone terrace. The construction is unusual as the capstone appears to have been levered from the bedrock and propped up by low stones at its outer edge. The capstone has broken into three pieces and rests above a partially collapsed chamber. The capstone measures c.4.6m long, up to 2.8m wide and 0.8m thick. It is aligned E-W. The central section stands to a height of 1.4m. A slight rise in the ground around the burial chamber represents the remains of the covering mound. It is circular and measures c.14m in diameter. Part of the chamber was excavated in 1909.

The monument's importance is further enhanced by its unusual construction and its proximity to Benllech Megalith, which is located c.850m NW. <7>

Sources :
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
Thompson, D. , 1989 , PRN 3602 , <5>
Baynes, E. N. , 1910 , Transactions of the Honourable Society of Cymmrodorion , <1>
Ordnance Survey , 1963 , SH58SW , <3>
Ordnance Survey , 1970 , SH58SW 3 , <4>

Events :
42869 : Prn 3602 Gat Site Visit (year : 1989)
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 PRNs : 300835

Compiled date :


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.

November 19, 2018, 9:09 am - HTML file produced from Gwynedd Archaeological Trust Regional HER
Gwynedd Archaeological Trust, Craig Beuno, Garth Road, Bangor, Gwynedd.  LL57 2RT
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