HistoryPrehistoric (c. 9600–8000 BCE, Pre-Pottery Neolithic)Southeastern Turkey (Upper Mesopotamia)low confidence

Archaeologist Klaus Schmidt and colleagues estimated that at least 500 people were needed to quarry, transport, and erect Göbekli Tepe's 10- to 50-ton stone pillars, some moved from locations as far as a quarter-mile away.

Notes on verification

Verbatim match to original 2008 Archaeology Magazine source citing Schmidt's estimate; corroborated by multiple independent sources, though later DAI research offers more conservative/refined figures on distance and labor. [tier=unverified indep_score=0.3 clusters=3 claim_tier=notable] [rescored 2026-09-15: curated origin-host map (PR #65); unclassified hosts no longer scored as aggregators]

Sources