Israeli archaeologists were left scratching their heads recently over the discovery of a set of mysterious V-shaped stone carvings at a dig near the Old City in Jerusalem.
The five-centimeter deep, 50-centimeter long carvings, estimated to be more than two thousand years old, were discovered while archaeologist were excavating in the City of David ruins, where the biblical King David is thought to have lived.
Researchers have, so far, been unable to find any reasonable accounting for the ancient engravings, lodged in a complex of rooms carved in the bedrock, since there were no nearby contextual clues, the Ha'aretz daily reported.
"The markings are very strange, and very intriguing. I've never seen anything like them," head of the excavation, Eli Shukron, said.
Among the theories are that the carvings could have attached a wooden structure to the wall, or served some pagan ritual function.
However, archaeologists said these were only weak theories, and they admitted to such puzzlement about the meaning of the V-shaped stone carvings.
Archaeologists turned to Facebook. They posted a photo of the carvings and asked users on their page to suggest theories. Answers bounced back that the carvings were "a system for wood panels that held some other item," or "a symbol of water."
Diggers admitted that they are also in the dark over the use of the rooms, which they said may have been used as a ritual site, due to the careful engineering in their construction and their location next to a spring.