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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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GLASSHOUSE *
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A building made chiefly of glass, used to grow plants and fruit in. Use more specific type where possible.
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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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FIELD SYSTEM *
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A group or complex of fields which appear to form a coherent whole. Use more specific type where known.
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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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* Copyright of English Heritage (1999)