Exploring Hopewell Pyro Engineering: Experimental Replication of the “Pit and Tunnel” Features from the Turner Site (33HA26) in Southwest Ohio
Bibliographic record
Abstract
Abstract The peoples referred to by archaeologists as “Hopewell” were expert artisans and adept engineers who created vast culturally modified landscapes. One of the most intriguing Hopewell sites is the Turner Earthwork Complex in southwest Ohio. This complex included enclosures, embankments, and mounds. Excavations beneath one mound by Harvard University's Peabody Museum in the 1880s revealed a circle of 30 large features originally referred to as “Pits and Tunnels”—deep pits connected by long angled tunnels. Evidence of intense burning in each of these features led to interpretations of them as possible kilns. We re-created one such feature and lit fires in order to examine the thermodynamics of these systems. Our findings reveal ingenious inventions akin to augmented draft kilns, and their design allows for the relatively easy production of temperatures in excess of 1000°C. While possible functions will be tested in a future study, this initial research provides insights into Hopewell engineering and activities at the Turner site.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".