In joint work at the site since 1995, the German Archaeological Institute and Şanlıurfa Museum have found T-shaped obelisks from the Neolithic era towering three to six meters (10-20 feet) high and weighing 40-60 tons. During the excavations, diverse 12,000-year-old artifacts such as human statuettes 65 centimeters (26 inches) high were also unearthed.