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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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Prehistoric
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About 500,000 BC to 42 AD
The Prehistoric period covers all the periods from the Palaeolithic to the end of the Iron Age. This is a time when people did not write anything down so there is no documentary evidence for archaeologists to look at. Instead, the archaeologists look at the material culture belonging to the people and the places where they lived for clues about their way of life.
The Prehistoric period is divided into the Early Prehistoric and Later Prehistoric. The Early Prehistoric period covers the Palaeolithic and Mesolithic periods. The Later Prehistoric period covers Neolithic, Bronze Age and Iron Age times. more ->
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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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Medieval
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1066 AD to 1539 AD (the 11th century AD to the 16th century AD)
The medieval period comes after the Saxon period and before the post medieval period.
The Medieval period begins in 1066 AD. This was the year that the Normans, led by William the Conqueror (1066 – 1087), invaded England and defeated Harold Godwinson at the Battle of Hastings in East Sussex. The Medieval period includes the first half of the Tudor period (1485 – 1603 AD), when the Tudor family reigned in England and eventually in Scotland too. The end of the Medieval period is marked by Henry VIII’s (1509 – 1547) order for the Dissolution of the Monasteries in the years running up to 1539 AD. The whole of this period is sometimes called the Middle Ages. more ->
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SETTLEMENT *
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A small concentration of dwellings.
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RECTILINEAR ENCLOSURE *
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A monument consisting of an area of land enclosed by a ditch, bank, wall, palisade or similar barrier, where the barrier consists of several straight or near straight sections.
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HUT CIRCLE SETTLEMENT *
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A settlement consisting of several hut circles, either grouped together or dispersed. Characteristic of the later prehistoric period. Use specific forms where supported by the available evidence. For isolated hut circles use HUT CIRCLE.
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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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WELL *
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A shaft or pit dug in the ground over a supply of spring-water.
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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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DITCH *
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A long and narrow hollow or trench dug in the ground, often used to carry water though it may be dry for much of the year.
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HUT CIRCLE *
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A round house indicated by the presence of a low, roughly circular bank of turf, earth or stone, which formed the base of the walls. Characteristic of the later prehistoric period. Where several occur together use HUT CIRCLE SETTLEMENT.
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BARN *
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A building for the storage and processing of grain crops and for housing straw, farm equipment and occasionally livestock and their fodder. Use more specific type where known.
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* Copyright of English Heritage (1999)