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Archaeological Site

Cahokia Mounds

Mississippian · 800 to 1400 CE, Collinsville, IL
ON THE CHART
Evidence status: Historical tradition. no documented source (historical tradition); legal status unknown (manual verification recommended). This account is presented as historical tradition, not verified fact. Manual verification recommended. Repository evidence: 0 sources · 0 timeline events · 0 media items · legal unknown · view on the Map Evidence on file: historical tradition

Cahokia Mounds: still unexplained.

Largest pre-Columbian city N of Mexico; UNESCO

The law of this ground: PROTECTED state historic site, digging/detecting is illegal (NAGPRA, ARPA). For history, not hunting.
The subject
developing the photograph…
Of note
Largest pre-Columbian city N of Mexico; UNESCO
The account

A Mississippian metropolis of ~10,000 to 20,000 with massive earthen pyramids and a 'Woodhenge' calendar, abandoned by ~1400.

Leads, where the trail points now
  • Pin down the most specific last-known position in the record before going; the search centers on Collinsville, IL.
  • What you are chasing is Largest pre-Columbian city N of Mexico; UNESCO. Work the documented record of Cahokia Mounds back to primary sources and separate what is attested from folklore.
  • PROTECTED state historic site, digging/detecting is illegal (NAGPRA, ARPA). For history, not hunting.
What the record holds

What remains open

  • No period map of the site has surfaced.
  • No contemporary press coverage has been found.
What we know, and what we don't
Established

No documentary claim is yet established. The account rests on tradition.

Still open
  • No period map of the site has surfaced.
  • No contemporary press coverage has been found.
The evidence room

No documentary or visual exhibits have been located yet. The trail below and the open leads are where this dossier grows next — every exhibit that enters here carries a source.

Where the trail points now
  • Pin down the most specific last-known position in the record before going; the search centers on Collinsville, IL.
  • What you are chasing is Largest pre-Columbian city N of Mexico; UNESCO. Work the documented record of Cahokia Mounds back to primary sources and separate what is attested from folklore.
  • PROTECTED state historic site, digging/detecting is illegal (NAGPRA, ARPA). For history, not hunting.
  • Search Library of Congress + DPLA (IIIF) for period cartography of the site.
  • Run Chronicling America for dated newspaper mentions.
  • Query NARA for archival records tied to the site.

Have a source, a map, or a clipping? Add a lead and it enters the record with its citation.

Start the hunt here
The first leads, so no one walks in cold.
Sources and the record
Related case files

The full hunt kit

Starting brief, what's known and disputed, evidence timeline, source list, map card, coordinate-confidence and legal-access summaries, and a field checklist, free with a Fellowship account.

Latest Word From the Newswire

Context, not proof. The dossier's own sources remain the evidence record.

Checking the wire…

Chart position 38.656°, -90.063° View on the Map