Beech Bottom Dyke
St Albans, United Kingdom
Beech Bottom Dyke, is a large ditch running for almost a mile at the northern edge of St Albans, Hertfordshire, England flanked by banks on both sides. It is up to 30 m (98 ft) wide, and 10 m (33 ft) deep, and it can be followed for three quarters of a mile between the "Ancient Briton Crossroads" on the St Albans to Harpenden road until it is crossed by the Thameslink/Midland mainline railway at Sandridge. Beyond the railway embankment it continues, to finish just short of the St Albans to Sandridge road. This part is not accessible to the public.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).