In June 2016 what was possibly a previously unrecognised round barrow was noted beneath an Ordnance Survey trig point at Fan Brycheiniog, a high point in the Brecon Beacons National Park at 802m above sea level. Severe visitor erosion was affecting the west side of the possible barrow, revealing a stony mound edged by a kerb of large stones beneath the trig point. A decision was taken to carry out a small evaluation excavation to characterise the site. This was done over three days in May 2017. It demonstrated that the site was almost certainly a Bronze Age round barrow consisting of a low mound of stones overlain by a turf mound and surrounded by a kerb of large stones approximately 8m in diameter. The site is of sufficient quality to be designated a Scheduled Monument. Damage caused by visitors should be repaired.