The odd detail
Cranes appear again and again among Göbekli Tepe's carved animals — and they are carved oddly. In several reliefs the crane's legs bend forward at the knee, like a human's, rather than backward like a real bird's. Writing on the German Archaeological Institute's Tepe Telegrams, the excavation team reads this as a possible clue: these may not be plain cranes, but people dressed as cranes.
Why a crane
Cranes are among the largest flying birds of the region; they perform elaborate courtship dances, and they arrive and depart with the seasons. Crane dances and bird costumes recur in ritual across many later cultures. If the Göbekli carvers were depicting a masquerade, it would be among the earliest hints anywhere of costumed ritual performance — of people stepping into the body of an animal.
Interpretation, flagged as interpretation
No costume survives — only the carvings and their curiously human legs. This is a reading, not a settled fact. But it comes from the site's own researchers, and it fits a theme that runs right through Göbekli Tepe's art: the line between human and animal is deliberately blurred, and some of the beasts on the pillars may be people in disguise.