Ancient Calendar, Recently Discovered, May Document a Long-Ago Disaster
A researcher at the University of Edinburgh has discovered what he believes is the earliest calendar of its kind at Gobekli Tepe, an archaeological excavation site in what is now southern Turkey that used to be an ancient complex of temple-like enclosures.
The researcher, Martin Sweatman, a scientist at the University of Edinburgh, said in research published last month that V-shaped markings on the lunisolar calendar, which combines the movements of the moon and sun, recorded a major astronomical event that had a huge impact on Earth — making the ancient pillar part of an ancient version of a memorial.
Dr. Sweatman said that the intricate carvings at Gobekli Tepe tell the story and document the date when fragments of a comet — which came from a meteor stream — hit Earth roughly 13,000 years ago. The comet strike, which the latest research has placed in the year 10,850 B.C., has long been a source of disagreement among academics and researchers.
This is not the first time that Dr. Sweatman has been able to connect the impact of the comet to the site in Turkey, he said. In 2017, he linked the two in an academic paper in which he contended that the carvings at Gobekli Tepe were memorialized in the pillars, and that the site was used as a place to observe space.
At the time, a group of excavators at Gobekli Tepe challenged those findings. Jens Notroff, an archaeologist who wrote the post on the excavators’ website, was not immediately convinced about the new findings and questioned whether the markings had a deeper meaning. He said on the social media platform X that there was an “an obsession with the idea that there *must* be a secret, a hidden code which needs to and can be decoded — while it’s really just about past humans living their lives.”
Dr. Sweatman said the recent discovery that one of the pillars also depicts a lunisolar calendar — and thus marks the day of the impact — lined up with his prior research. “We can be very confident indeed that it’s a date,” he said.
The comet strike ushered in a 1,200-year ice age and led to the extinction of many large animals, Dr. Sweatman said. For humans, the comet probably also led to differences in lifestyle and agriculture that helped usher in the rise of civilization as we know it.
Although Dr. Sweatman has long researched the symbols at the ancient site in Turkey, this recent breakthrough came in the form of a tip when someone emailed him that the V-shaped symbols on the pillar could be interpreted as markings of the lunar cycle.
“I had not spotted that myself before,” he said. “I had always wondered what these box- and V-symbols might mean.”
Each V-shaped symbol could represent a single day, according to Dr. Sweatman’s research. “This interpretation allowed researchers to count a solar calendar of 365 days on one of the pillars, consisting of 12 lunar months plus 11 extra days,” the research states.
The final V on the pillar is “represented by a V worn around the neck of a birdlike beast thought to represent the summer solstice constellation at the time,” the research concluded. Other statues nearby, possibly representing deities, have been found with similar markings.
After interpreting the V-shaped symbols as such, everything fell into place, Dr. Sweatman said. The carvings suggest that “ancient people were able to record their observations of the sun, moon and constellations in the form of a solar calendar, created to keep track of time and mark the change of seasons,” he said.
Imagining what it was like when ancient humans carved these markings into the pillars will probably always be impossible for us 21st century beings, but it could tell us something about these ancient people.
“What it suggests,” Dr. Sweatman said, “is that this event was important to them.”
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