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Latitude: 52.2469 / 52°14'48"N
Longitude: -3.5798 / 3°34'47"W
OS Eastings: 292237
OS Northings: 262146
OS Grid: SN922621
Mapcode National: GBR YF.0GPX
Mapcode Global: VH5CV.WSVD
Entry Name: Nant y Postau round cairn
Scheduled Date: 19 August 2008
Source: Cadw
Source ID: 4341
Cadw Legacy ID: BR395
Schedule Class: Religious, Ritual and Funerary
Category: Round cairn
Period: Prehistoric
County: Powys
Community: Rhayader (Rhaeadr Gwy)
Traditional County: Brecknockshire
The monument comprises the remains of a burial cairn, probably dating to the Bronze Age (c.2300 BC - 800 BC) and situated in open moorland on a saddle between Gro Hill to the SE and a N-facing spur to the NW of Gro Hill. The stone-built cairn is circular on plan and measures about 6m in diameter and 0.8m in height. The cairn has a well-defined edge and appears to be intact.
The monument is of national importance for its potential to enhance our knowledge of prehistoric burial and ritual practices. 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 structural evidence and intact burial or ritual deposits. The topographic association with the other cairns and cairn cemetery on Gro Hill (BR394 and BR396 - BR398) and the major stone circle to the E (BR274) further increases its importance.
The scheduled area comprises the remains described and an area around them within which related evidence may be expected to survive. It is circular and measures 20m in diameter.
Source: Cadw
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