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Earthwork
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Earthworks can take the form of banks, ditches and mounds. They are usually created for a specific purpose. A bank, for example, might be the remains of a boundary between two or more fields. Some earthworks may be all that remains of a collapsed building, for example, the grassed-over remains of building foundations.
In the winter, when the sun is lower in the sky than during the other seasons, earthworks have larger shadows. From the air, archaeologists are able to see the patterns of the earthworks more easily. Earthworks can sometimes be confusing when viewed at ground level, but from above, the general plan is much clearer.
Archaeologists often carry out an aerial survey or an earthwork survey to help them understand the lumps and bumps they can see on the ground.
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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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excavation
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Archaeologists excavate sites so that they can find information and recover archaeological materials before they are destroyed by erosion, construction or changes in land-use.
Depending on how complicated and widespread the archaeological deposits are, excavation can be done by hand or with heavy machinery. Archaeologists may excavate a site in a number of ways; either by open area excavation, by digging a test pit or a trial trench.
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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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Neolithic
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About 4000 BC to 2351 BC
The word ‘Neolithic’ means ‘New Stone Age’. Archaeologists split up the Neolithic period into three phases; early, middle and late. The Neolithic period comes after the Mesolithic period and before the Bronze Age.
People in the Neolithic period hunted and gathered food as their ancestors had but they were also began to farm. They kept animals and grew crops. This meant that they were able to settle more permanently in one location instead of constantly moving from place to place to look for food.
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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.
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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.
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FIELDWORK *
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A usually temporary earthwork or fortification, the latter constructed by military forces operating in the field. Use more specific type where known.
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HENGE *
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Circular or sub-circular enclosure defined by a bank and (usually internal) ditch, with one or two (rarely more) entrances. Of ceremonial/ritual function, they contain a variety of internal features including timber or stone circles.
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SITE *
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Unclassifiable site with minimal information. Specify site type wherever possible.
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BUILDING *
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A structure with a roof to provide shelter from the weather for occupants or contents. Use specific type where known.
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SEARCHLIGHT BATTERY *
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A site in which one or more searchlights were positioned to locate enemy aircraft or surface vessels for the benefit of batteries and night fighter aircraft.
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MUSEUM *
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A building, group of buildings or space within a building, where objects of value such as works of art, antiquities, scientific specimens, or other artefacts are housed and displayed.
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MORTUARY ENCLOSURE *
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A subrectangular earthen enclosure defined by a ditch, usually with an internal bank, assumed to have been used for the primary exposure or burial of human remains in the Neolithic period prior to secondary burial elsewhere.
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HEAVY ANTI AIRCRAFT BATTERY *
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An anti aircraft battery usually mounting weapons with a larger calibre ammunition such as the QF 3.75 inch (94mm) gun.
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WOOD *
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A tract of land with trees, sometimes acting as a boundary or barrier, usually smaller and less wild than a forest.
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RING DITCH *
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Circular or near circular ditches, usually seen as cropmarks. Use the term where the function is unknown. Ring ditches may be the remains of ploughed out round barrows, round houses, or of modern features such as searchlight emplacements.
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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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MOUND *
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A natural or artificial elevation of earth or stones, such as the earth heaped upon a grave. Use more specific type where known.
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TARGET *
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Any structure or object, used for the purpose of practice shooting by aerial, seaborne or land mounted weapons.
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EARTHWORK *
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A bank or mound of earth used as a rampart or fortification.
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BATTERY *
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A site where guns, mortars or searchlights are mounted. Use specific type where known.
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* Copyright of English Heritage (1999)
