High Dyke, County Durham
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High Dyke is a hamlet[1] in County Durham, England. It is a short distance to the north of Middleton-in-Teesdale and within the civil parish of the same name.[2] It is named High Dike on an Ordnance Survey map published in 1920 and lies on and around the 1,000 feet (300 m) contour line.[3] Silver-lead ore was mined here in the 19th-century by the London Lead Company;[4] several old shafts are marked on the map.