In July 2017, two cairns and a part of a stone alignment on Mynydd y Betws,
Carmarthenshire were excavated. One of the cairns had the appearance of a Bronze Age
funerary monument. No evidence for a burial was present, although the centre of the
cairn had been disturbed in recent times. No artefacts to date the cairn were found and
there was no carbonised material suitable for radiocarbon dating. The second cairn was a
simple, small mound of stones. Six flint artefacts and three sherds of Roman glass were
found in association with it, and charcoal in the buried soil returned a radiocarbon date
with a range from the early 5th century AD to the mid-6
th century AD. Four small
trenches were excavated across the 717m long stone alignment. The small stones of the
alignment were found to have been placed directly on the ground or more probably
inserted into a small cut in the contemporary turf and topsoil. Although no dating
evidence was found, a prehistoric date for the alignment is favoured.
