There are over thirty surviving standing stones in the Brecon Beacons National Park. It isn't known exactly how many of these are prehistoric. Some appear to be memorial stones and others may well have had more than one function either as boundary markers, waymarks on ancient routeways, signposts or even rubbing stones for livestock. Below, you will find details of a few of the most impressive.
Maen Llia (SN 924 191)
Standing just 60m off the minor road between the Senni valley and Ystradfellte, this is a relatively easy and impressive stone to visit. Made from a massive sandstone block which stands 3.7m high,the task of moving and erecting it must have been a huge challenge, especially as it is likely that a quarter to a third of the whole stone is below ground. On a clear day it can be seen from quite some distance down the Llia valley suggesting that it may have been important as a territorial marker. Standing at an altitude of 573m (1880 ft) it is also thought to be the highest standing stone in South Wales.
Maen Madoc (SN 918 157)
At almost 2.7 metres (10 feet) in height, this imposing stone stands high on the moors alongside the Roman road, Sarn Helen. The Latin inscription, DERVACUS FILIUS JUSTI IC JACIT translates as Dervacus, son of Justus. He lies here (a sixth century Roman name). Although widely recognised as a Roman memorial stone, it may well have been erected in Bronze Age times.
Saith Maen (SN 833 154)
In some parts of the country, such as Dartmoor, stone rows are relatively common, but in the Brecon Beacons National Park this is the only one not associated with a stone circle, making Saith Maen rather special to us. Saith Maen means seven stones, and seven stones still survive at this remote moorland site, although sadly, at least two have now fallen. Aligned from north-north-east to south-southwest in the direction of Cerrig Duon stone circle, the stones vary in height from 1.7 to 0.5m and form a row 13.7m long. Many believe there is a spiritual and important link between the two sites.