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People visit the Gobekli Tepe archeological site in Sanliurfa province, southeastern Turkey, on June 13, 2020. Gobekli Tepe, inscribed on UNESCO World Heritage List in 2018, has become a top cultural destination in Turkey. Regarded as the "ground zero for human history," Gobekli Tepe, which means Potbelly Hill in Turkish, is the world's oldest known megalithic structure in Upper Mesopotamia. Dating back to roughly 12,000 years ago, the site is considered the world's oldest temple. It is also among the oldest archeological ruins in the world, featuring massive carved stones and T-shaped pillars that predate the arrival of agriculture. (Photo by Mustafa Kaya/Xinhua)
