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Aerial Photograph
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Aerial photographs are taken during an aerial survey, which involves looking at the ground from above. It is usually easier to see cropmarks and earthworks when they are viewed from above. Aerial photographs help archaeologists to record what they see and to identify new sites. There are two kinds of aerial photographs; oblique and vertical.
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SITE *
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Unclassifiable site with minimal information. Specify site type wherever possible.
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RAILWAY SIGNAL *
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A structure with semaphore arms and/or coloured lights used as a means of warning on railway systems.
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SIGNAL BOX *
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A building on a railway system housing levers used to regulate trains on the tracks using signals and to change the points to enable a train to transfer from one track to another.
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RAILWAY *
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A line or track consisting of iron or steel rails, on which passenger carriages or goods wagons are moved, usually by a locomotive engine.
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* Copyright of English Heritage (1999)
