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Cacao DNA Found in 1,000-Year-Old Etowah Pottery, Earliest East of the Mississippi

cultural-heritage · 2026-10-02

A study published on August 26 in PLOS One has uncovered the earliest evidence of cacao east of the Mississippi River through genetic analysis of pottery residues from the Etowah Indian Mounds in Georgia. The research, spearheaded by archaeologists Adam King and Terry Powis, discovered cacao DNA in two out of 31 sherds that were excavated in the 1950s, which date back to a feast occurring between 1050 and 1150 C.E. This finding indicates potential trade links between Georgia and Central America, possibly through direct exchanges from Chaco Canyon or along the Gulf Coast. Additionally, the pottery's distinct designs set them apart from Maya vessels, reigniting discussions about the relationships between Mississippian mound-building and Mesoamerican pyramids, emphasizing the interconnectedness of the Americas.

Key facts

  • Cacao DNA was found in two of 31 pottery sherds from the Etowah Indian Mounds in Georgia.
  • The sherds date to a feast between 1050 and 1150 C.E., associated with early mound building.
  • The study was published on August 26 in PLOS One.
  • Cacao was domesticated in Ecuador about 5,300 years ago and used by the Olmecs by 1500 B.C.E.
  • Etowah's tallest mound once rose about 64 feet and was built with red clay between 1000 and 1550 C.E.
  • Possible routes for cacao to reach Etowah include trade from Chaco Canyon, the Gulf Coast, or the Caribbean.
  • The Etowah vessels have unique stamped designs, unlike Maya or Ancestral Puebloan pottery.
  • The discovery revives debate about connections between Mississippian mounds and Mesoamerican pyramids.

Entities

Artists

  • Adam King
  • Terry Powis
  • Barbara Mills
  • Anabel Ford
  • Joseph Fry

Institutions

  • University of South Carolina
  • PLOS One
  • Florida Museum of Natural History
  • University of Arizona
  • University of California, Santa Barbara
  • Muscogee people
  • Smithsonian Magazine

Locations

  • Etowah
  • Georgia
  • United States
  • Mississippi River
  • Mesoamerica
  • Ecuador
  • Mexico
  • Cahokia
  • Illinois
  • Chaco Canyon
  • New Mexico
  • Pueblo Bonito
  • Atlanta
  • Gulf Coast
  • Caribbean
  • Florida
  • South America

Sources