What this means
Researchers dug at one site and found iron-making remains from about 400 BCE to 400 CE. The method changed very little over those centuries, and the work was likely small and seasonal.
Plain-English summary written by an AI model from the abstract. The original is below.
- Who it was tested in
- Excavations at one archaeological site in eastern Senegal, with 35 furnace bases
- Kind of research
- A study
The science
- Original title
- Evolution of an Early and Long-Lasting Iron Smelting Technique at Didé West 1, Falémé Valley, Eastern Senegal.
- Authors
- Morel M, Lamotte P, Dianifaba L et al.
- Journal
- The African archaeological review
- Published
- Oct 13, 2026
- Study type
- Study
- PMID
- 42865535 ↗
Abstract
The region west of the Falémé Valley in eastern Senegal, where several distinct smelting traditions have been identified, is key to understanding early West African iron metallurgy, which remains globally underdocumented in this part of the continent. Excavations carried out in 2018 and 2022 at the Didé West 1 site (DDW1) uncovered an exceptionally well-preserved slag heap dated between the 4th century BCE and the 4th century CE, representing nearly eight centuries of activity. The site belongs to the FAL02 smelting tradition and revealed 35 circular clay-lined furnace bases producing internal slag blocks, numerous massive multiperforated tuyeres, and the distinctive use of palm nuts as stuffing material. This outstanding preservation offers a unique opportunity to investigate long-term technological continuity and adaptation. The stratigraphic and spatial analyses made it possible to reconstruct both the chronological sequence and the evolution of the workshop's layout, which gradually shifted northward over time. Quantitative estimations suggest that iron smelting was likely small-scale and seasonal, primarily aimed at meeting local needs. Despite its extraordinary longevity, the tradition remained remarkably stable, with only minor technical adjustments. This technique and its continuity contrast with other metallurgical contexts and highlight the significance of technological choices in early iron production.
Morel M, Lamotte P, Dianifaba L et al. Evolution of an Early and Long-Lasting Iron Smelting Technique at Didé West 1, Falémé Valley, Eastern Senegal. The African archaeological review. 2026. doi:10.1007/s10437-026-09653-z. PMID: 42865535. https://pubmed.ncbi.nlm.nih.gov/42865535/