40 ton megaliths, carbon-dating shows that the complex is about 12,000 years old, that means it was built around 10,000BC. By comparison, Stonehenge was built in 3,000 BC and the pyramids of Giza in 2,500 BC. Gobekli is thus the oldest such site in the world, by a mind-numbing margin. It is so old that it predates settled human life. It is pre-pottery, pre-writing, pre-everything. Gobekli hails from a part of human history that is unimaginably distant, right back in our hunter-gatherer past.