Building B at Göbekli Tepe went through multiple construction phases, each leaving a niche in the northern wall. Since bone collagen doesn't preserve well, dating relies on charcoal, with researchers now dating mortar within walls for more reliable results. Building D was excavated in 2023. ⛏️
Multi-phase building construction and radiocarbon dating challenges at Göbekli Tepe

Key facts
- Building B contains multiple construction phases, each with its own niche in the northern wall
- Most special buildings are only partially excavated
- Dating relies primarily on charcoal rather than bone, as collagen is not preserved in animal or human bone
- Recent shift to dating mortar within walls rather than fill of buildings, providing more reliable dates
- Researchers cannot use radiocarbon dating on bone due to poor collagen preservation
- Excavation occurred in Building D during the year of filming (2023)
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