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Cropmark
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Cropmarks appear as light and dark marks in growing and ripening crops. These marks relate to differences in the soil below. For example, parched lines of grass may indicate stone walls. Crops that grow over stone features often ripen more quickly and are shorter than the surrounding crop. This is because there is less moisture in the soil where the wall lies.
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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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Iron Age
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About 800 BC to 43 AD
The Iron Age comes after the Bronze Age and before the Roman period. It is a time when people developed the skills and knowledge to work and use iron, hence the name ‘Iron Age’ which is given to this period. Iron is a much tougher and more durable metal than bronze but it also requires more skill to make objects from it. People continued to use bronze during this period. more ->
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Roman
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About 43 AD to 409 AD (the 1st century AD to the 5th century AD)
The Roman period comes after the Iron Age and before the Saxon period.
The Roman period in Britain began in 43 AD when a Roman commander called Aulus Plautius invaded the south coast, near Kent. There were a series of skirmishes with the native Britons, who were defeated. In the months that followed, more Roman troops arrived and slowly moved westwards and northwards. more ->
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RIDGE AND FURROW *
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A series of long, raised ridges separated by ditches used to prepare the ground for arable cultivation. This was a technique, characteristic of the medieval period.
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FEATURE *
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Areas of indeterminate function.
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DITCHED ENCLOSURE *
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An area of land enclosed by one or several boundary ditches. Double index with a term to indicate the shape of the enclosure where known.
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FIELD *
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An area of land, often enclosed, used for cultivation or the grazing of livestock.
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ENCLOSURE *
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An area of land enclosed by a boundary ditch, bank, wall, palisade or other similar barrier. Use specific type where known.
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TRAPEZOIDAL ENCLOSURE *
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An area of land, roughly shaped like a trapezoid and enclosed by a boundary ditch, bank, wall, palisade or similar barrier.
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FARM *
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A tract of land, often including a farmhouse and ancillary buildings, used for the purpose of cultivation and the rearing of livestock, etc. Use more specific type where known.
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* Copyright of English Heritage (1999)