Scheduled Monuments- Full Report
Summary Description of a Scheduled Monument
Reference Number
RD212
Name
Clap yr Arian cairn
Date of Designation
22/12/2003
Status
Designated
Location
Unitary Authority
Powys
Community
Rhayader
Easting
293631
Northing
269948
Broad Class
Religious, Ritual and Funerary
Site Type
Round Cairn
Period
Prehistoric
Description
Summary Description and Reason for Designation
The following provides a general description of the Scheduled Monument.
The monument comprises the remains of a fine burial cairn, probably dating to the Bronze Age (c.2300 BC - 800 BC) and situated on the gently sloping S-facing side of the plateau of Penrhiw-wen, commanding extensive views to the SE over the valley containing the Nant Gwynllyn. The grass-covered cairn measures 16.5m in diameter and between 0.3m in height on its N side and 1.1m in height on its S side. At least eight large kerbstones are visible on the W side of the cairn. A large crater has been opened in the centre of the cairn, measuring about 7m in diameter and 0.9m in depth; this crater is presumably the result of the antiquarian investigations described in the Record. It is possible that this monument is a platform cairn and that the current ring bank surrounding the central hollow is the result of upcast spoil. A slight terrace is visible on the W arc of the cairn, measuring about 0.3m in height, with the cairn material only beginning to rise about 1.6m into this ledge. A small spread heap of stony spoil is visible immediately to the SSW.
The monument is of national importance for its potential to enhance our knowledge of prehistoric burial and ritual. The monument is an important relic of a prehistoric funerary and ritual landscape and retains significant archaeological potential, with a strong probability of the presence of both intact burial or ritual deposits and environmental and structural evidence, including a buried prehistoric land surface. The importance of the monument is further enhanced by its identification as a possible platform cairn, an unusual element within the surviving prehistoric ritual landscape.
The area scheduled comprises the remains described and an area around them within which related evidence may be expected to survive. It is circular and measures 22m in diameter.