Göbekli Tepe
On the younger level (II) rectangular structures with smaller megaliths have been excavated. In the surrounding area, several village sites incorporating elements similar to those of Göbekli Tepe have been identified. Four of these have Göbekli Tepe's characteristic T-shaped standing stones, though only one of them, Nevalı Çori, has so far been excavated. At Göbekli Tepe itself, no traces of habitation have so far been found, nor any trace of agriculture or cultivated plants, though bones of wild animals and traces of wild edible plants, along with many grinding stones, have been unearthed. It is thus assumed that these structures (which have been characterized as the first known ceremonial architecture) were erected by hunter-gatherers.