More than 200 pillars in about 20 circles are known (as of May 2020) through geophysical surveys. Each pillar has a height of up to and weighs up to 10 tons. They are fitted into sockets that were hewn out of the local bedrock. In the second phase, belonging to the Pre-Pottery Neolithic B (PPNB), the erected pillars are smaller and stood in rectangular rooms with floors of polished lime. The site was abandoned after the Pre-Pottery Neolithic B (PPNB). Younger structures date to classical times.