The circular special / communal building

Alongside its rock-cut houses, Çakmaktepe has produced larger special-purpose buildings, and the best-documented is a circular structure roughly 16 metres in diameter — a single, open room whose floor was made not by building up but by carving down into the bedrock, worked in relation to the slope of the hilltop.

Inside, official reporting records postholes cut into the floor, a bench-related feature, and a quadrangular feature about 1.5 by 1.5 m set beside the bench wall. Fragments of well-worked pillars were found nearby — simpler than Göbekli Tepe's carved T-pillars, and consistent with Şahin's suggestion that Çakmaktepe's uprights may be plainer prototypes, with any decoration carried on wooden beams that have not survived. That prototype reading is interpretation, not settled fact.

Like the enclosures at Göbekli Tepe, the building appears to have been intentionally backfilled when its use ended: reporting describes rows of carefully placed fill stones rather than a natural collapse. Deliberate burial of communal buildings is a recurring pattern across the Taş Tepeler world.

A note of caution on labels: press coverage does not always pin down which structure is meant — the ~16 m circular building, the building numbered 15, and 'the communal structure filled with gazelle skulls' are described in overlapping terms, and the precise correspondence between them is not yet fixed in publication. Treat the building's identity as reported rather than formally catalogued.