From Builth Wells take the A481 east. When you reach the village of Hundred House you will see a pub on your left. Just past the pub (on the same side of the road) you will see the barrow in a field. There is no public right of way to the barrow.
The barrow is visible from the road as a grass covered mound.
A mound, 21m in diameter and 0.9m high, thought to be levelled in 1835, revealing, a stone kerb, a circular arrangement of 8 pits and a central cist ‘resembling an oven’, containing 9 urns.