Subterranean Ring Chamber (Plan View)
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Ring 1 (Principal Structure)
Ring 2 (Secondary Structure)
Burned Bone Point (47 kyr C14)
Calcite Core Sample (176 kyr U-Th)
Radiometric Dating Calibration
U-Series Validated
Chronological Horizon
176.0 kyr
Middle Pleistocene / Neanderthal
Structural Integrity Score
94 / 100
Stacked Calcite Tiered Stability
Stalagmite Mass Mobilized
2,240 kg
~400 curated speleothem sections
Cognitive Complexity
Tier IV (High)
Coordinated Deep-Cave Architecture
Stratigraphic Comparison Matrix
| Method | Sample Target | Measured Date | Attributed Hominin |
|---|---|---|---|
| AMS 14C | Burned Ursus bone | ~47.0 kyr BP (Limit of C14) | Early Aurignacian H. sapiens |
| U-Series (U-Th) | Stalagmite calcite rims | 176.0 ± 2.0 kyr BP | Neanderthal (Homo neanderthalensis) |
Deliberate subterranean engineering deep inside Bruniquel Cave requiring artificial illumination and coordinated social labor.
Validated Canonical State Handshake
Initializing Bruniquel Cave Radiometric Workbench...