What is the world’s oldest calendar?
In 2013, archeologists announced the discovery at Warren Field in Scotland of what they claim as the world’s oldest calendar – a series of 12 large pits that were designed to mimic the various phases of the moon and aligned perfectly on the midwinter solstice in a way that would have helped the Mesolithic hunter-gathers keep accurate track of the passage of the seasons and the lunar cycle.
At nearly 10,000 years old, these pits are pre-dating by several thousand years the Bronze Age monuments in Mesopotamia.
The geophysical evidence suggests the pits had been periodically reshaped until at last the calendar-monument seemed to fall out of use around 4,000 years ago.
First discovered by aerial photography in 2004, their significance was recognized only 10 years later, using the latest-generation remote-sensing technology and software that worked out the positions of sunrises and sunsets in the landscape 10,000 years ago.
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