Göbekli Tepe

The hill, 15 meters (49 feet) high and 300x300 meters (984 x 984 feet) in size, was used for agricultural purposes for many years.

An excerpt from the article 18 facts about Göbekli Tepe
Numerous stones were moved from the site when farmers subdivided the land for cultivation according to their needs. The archeological value of the site has undoubtedly suffered some damage.