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Description: | Taken by the Ordnance Survey, this vertical image shows soilmark evidence of salt workings in marshland near to the north Kent coastline. As well as former drainage channels and sea defences, ploughed out salterns (mounds of waste material left over from medieval salt production processes) are visible as soil and germination marks. | Subjects: | Agriculture Salt Works Field System Landscape Aerial View | Source: | English Heritage - Viewfinder | Identifier: | http://viewfinder.english-heritage.org.u... | Language: | en | Go to resource |
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