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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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Imperial
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1751 AD to 1914 AD (end of the 18th century AD to the beginning of the 20th century AD)
This period comes after the Post Medieval period and before the modern period and starts with beginning of the Industrial Revolution in 1750. It includes the second part of the Hannoverian period (1714 – 1836) and the Victorian period (1837 – 1901). The Imperial period ends with the start of the First World War in 1914. more ->
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LODGE *
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A small building, often inhabited by a gatekeeper, gamekeeper or similar. Use specific type where known.
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BOUNDARY *
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The limit to an area as defined on a map or by a marker of some form, eg. BOUNDARY WALL. Use specific type where known.
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INDUSTRIAL *
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This is the top term for the class. See INDUSTRIAL Class List for narrow terms.
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LINEAR FEATURE *
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A length of straight, curved or angled earthwork or cropmark of uncertain date or function.
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RACECOURSE *
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An area or route marked out for the site of a race.
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* Copyright of English Heritage (1999)