HistoryNeolithic (c. 9600–8000 BCE)Southeastern Turkey (Upper Mesopotamia)high confidence

Göbekli Tepe's stone circles range from 30 to 100 feet in diameter and are enclosed by rectangular stone walls about 6 feet high.

Notes on verification

Diameter range (30-100 ft) is well corroborated by independent archaeological sources. The specific 6-foot wall height figure comes primarily from the original source article and lacks independent confirmation, though it is consistent with general descriptions of low stone walls/benches at the site. [tier=gold indep_score=0.867 clusters=3 claim_tier=notable]

Sources