We do not know the specific social mechanisms through which they occurred.

The third significant remaining mystery is the full extent of what lies beneath the unexcavated portions of the mound.

The geophysical surveys suggest many more enclosures.

Each of those enclosures will have its own specific character, its own animal imagery, its own history of construction and modification.

What those enclosures contain, and what they will reveal when eventually excavated, is unknown — but the expectation, based on what the excavated portions have produced, is that they will be significant.

Göbekli Tepe rewards long engagement.