From the Nottingham Post ! ...............
The ancient road that runs entire length of Wales forgotten for centuries
The cobbled road stretches from Neath to Conwy and is named after a Celtic princess
Wales is home to one of the best-kept secrets in the country - a Roman road that runs its entire length, yet many people don't even know it's there. The cobbled remains of Sarn Helen stretch from Neath in the south to Conwy in the north.
Although mostly hidden, parts of the track have been revealed due to centuries of use. History buffs who are aware of its existence often walk along it, with some saying they can almost hear the echoes of Roman boots that once marched along.
Built nearly 2,000 years ago, Sarn Helen is believed to be named after Celtic princess Elen Lwy-ddawg, also known as Saint Elen, who was married to the feared Roman emperor Magnus Maximus. It's thought that she convinced her husband to build roads across the country to help his soldiers defend it more easily.
You can find large standing stones along certain parts of the road, some as tall as 13ft. These stones are older than the Roman occupation of Britain.
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https://www.nottinghampost.com/news/uk-world-news/ancient-road-runs-entire-length-9185045?IYA-reg=49560bcd-5a9c-47f0-8fc5-ba2e71710589