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Bryn y Maen Alignment is a prehistoric stone alignment comprising four standing stones located in Wales. The monument consists of stones arranged in a linear pattern, a configuration typical of later Neolithic or Bronze Age ritual and territorial markers. Such alignments are thought to have served ceremonial or astronomical functions, though their precise original purpose remains uncertain. The site is protected as an ancient monument by Cadw, the Welsh heritage organisation, and is registered under reference RD069.
The stones rest upon bedrock of Ludlow age, formed from mudstone, siltstone and sandstone deposits that underlie the Welsh landscape. This geology would have been familiar to prehistoric communities exploiting the local terrain for stone suitable for both tools and monuments. The solid foundation provided by these sedimentary rocks would have made the alignment stable and enduring.
The four-stone arrangement places Bryn y Maen within a group of comparable alignments found across Wales and Britain. Unlike larger megalithic monuments such as stone circles or cairns, alignments required less collective labour to erect, yet still carried sufficient communal investment to suggest their importance to local populations. The monument remains part of the archaeological record demonstrating how prehistoric peoples marked and structured their landscape.
Bryn y Maen Alignment (Four Stones) is a scheduled monument protected by Cadw under reference RD069. View the official record →
Bryn y Maen Alignment is a prehistoric stone alignment comprising four standing stones located in Wales. It is designated a Scheduled Ancient Monument by Cadw under reference RD069.
Bryn y Maen Alignment (Four Stones) dates from the prehistoric period, and is classified as a stone alignment. It is one of over 32,000 scheduled monuments protected across the UK.
Bryn y Maen Alignment (Four Stones) is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is RD069.
Several scheduled monuments lie within 10 km, including Cefn Wylfre Round Barrows (5.9 km), Cefn Wylfre Platform House (6.2 km), Cefn Wylfre Deserted Rural Settlement (6.4 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Bryn y Maen Alignment (Four Stones)'s history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Bryn y Maen Alignment (Four Stones) stands on Ludlow Rocks (Undifferentiated), bedrock that formed in the Ludlow. The rock here is mudstone, siltstone and sandstone.