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memorial consisting of a very large stone forming part of a prehistoric structure (especially in western Europe)
Old stone Age
The period of human prehistory that lasted until about 12,000 years ago, during which stone tools were the most common technology used by humans
the historical period believed to have lasted from 30,000 BC until about 10,000 BC
Post and lintel
a structure consisting of vertical beams (posts) supporting a horizontal beam (lintel)
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