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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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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. more ->
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MULTIPLE DITCH SYSTEM *
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A multiple, parallel arrangement of linear earthwork ditches, usually accompanied by banks, and often of considerable territorial extent. Usually of later prehistoric or Roman date.
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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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INTERRUPTED DITCH SYSTEM *
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Ditches interrupted by wide, regular causeways. Each section of ditch is about 30-40m long, and each causeway is 10-15m wide. In some cases, a network of fields has been created. Found mainly in the South East of England.
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PIT ALIGNMENT *
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A single line, or pair of roughly parallel lines, of pits set at intervals along a common axis or series of axes. The pits are not thought to have held posts.
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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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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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FIELD BOUNDARY *
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The limit line of a field.
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CROSS *
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A free-standing structure, in the form of a cross (+), symbolizing the structure on which Jesus Christ was crucified and sacred to the Christian faith. Use specific type where known.
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* Copyright of English Heritage (1999)