Bwlch Ring Cairn, Brecon Beacons, Wales

"A cairn is a human-made pile (or stack) of stones. The word cairn comes from the Scottish Gaelic: càrn (plural càirn). Cairns have been and are used for a broad variety of purposes, from prehistoric times to the present. A cairn to mark a mountain summit in Graubünden, Switzerland In modern times, cairns are often erected as landmarks, a use they have had since ancient times. However, since prehistory, they have also been built and used as burial monuments; for defense and hunting; for ceremonial purposes, sometimes relating to astronomy; to locate buried items, such as caches of food or objects; and to mark trails, among other purposes." ~ https://en.wikipedia.org/wiki/Cairn Location: https://goo.gl/maps/3MLQst2463R2 More about this particular cairn: http://www.megalithic.co.uk/article.php?sid=4012