Fascinating historical practice — Chinook people in the Pacific Northwest performed artificial cranial modification, but only on freeborn individuals, never slaves. Lewis and Clark even met a modified chief. The practice continued until roughly 150 years ago.
Pacific Northwest Chinook people practiced artificial cranial modification

Key facts
- A Chinook chief with an artificially modified cranium met Lewis and Clark in the Pacific Northwest
- Artificial cranial modification was performed only on freeborn Chinook people, not slaves
- Chinuk was a trading language spoken by multiple tribes in the region
- The practice continued until approximately 150 years ago
- The book "Atoria" (required reading in the Pacific Northwest ~100 years ago) documents a European explorer witnessing a child's head being bound to elongate it
Sources
pmc.ncbi.nlm.nih.gov
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gosh.nhs.uk
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newscientist.com
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sciencealert.com
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fau.edu
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Head Space: Behind 10000 Years of Artificial Cranial ...atlasobscura.com
This was an example of “artificial cranial deformation,” or in layman's terms, the practice of altering the head's natural shape through force.
Tracing the History and Health Impacts of Skull Modificationdiscovermagazine.com
Artificial cranial deformation (ACD) is the intentional manipulation of the skull's physical attributes, and is usually practiced on infants ...
Artificial cranial deformationen.wikipedia.org
It is done by distorting the normal growth of a child's skull by applying pressure. Flat shapes, elongated ones (produced by binding between two pieces of wood) ...
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