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A survey of Hadrian's Wall is to be undertaken by English Heritage Aerial Survey as part of the National Mapping Programme (NMP). All archaeological features visible on aerial photographs as earthworks or cropmarks will be recorded and mapped. The proposed project area is a broad band along the Roman frontier works and up to 10 km wide, within which sites of all periods will be recorded. This will allow the World Heritage Site to be better understood and managed in its landscape context.
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Antonia Kershaw (2002) studied this question.
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