Nant Tarw, Boulder

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NPRN84442
Map ReferenceSN82NW
Grid ReferenceSN8201025880
Unitary (Local) AuthorityPowys
Old CountyBrecknockshire
CommunityLlywel
Type Of SiteSTANDING STONE
PeriodPrehistoric
Description

Some 50m NE of a round cairn (NPRN 304782), embedded in the south-west bank of Nant Tarw, is an upright block of local sandstone. It measures 1.1m wide (NW-SE) at base, 0.4m thick and 1.2m high. It tapers to 0.4m wide at top and leans slightly to the north-west.
In this position such a stone is unlikely to be an in situ standing stone; more likely it is a glacial erratic exposed by riverine erosion of the boulder clay.

David Leighton, RCAHMW, 13 November 2008