Stonehenge, Wiltshire, England
Stonehenge is a prehistoric stone circle monument, located in the English county of Wiltshire. It is estimated that the stones were erected between 3000 BC and 2000 BC. Their exact purpose or origin is unknown, despite many theories and myths.
The Heel Stone (also known as the Friar's Heel, Slaughter Stone or Sun-Stone) can be seen in the middle distance.
© The Roseries Collection / Mary Evans Picture Library
Four different examples of worked turquoise. Turquoise (hydrated copper aluminum phosphate) is perhaps one of the most valuable non-transparent minerals. It has been used in jewellery by the ancients Egyptians
© Mary Evans / Natural History Museum
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