Big Mound Key-Boggess Ridge Archeological District
Big Mound Key-Boggess Ridge Archeological District, Archaeological district in Charlotte County, United States.
The site contains four shell mounds reaching 20 feet in height, arranged in a rectangular pattern across 13.5 acres of land near Placida.
Radiocarbon dating revealed that indigenous peoples constructed these structures approximately 2000 years ago during the Weeden Island culture period from 400 to 900.
The location functioned as a central trading post between the Manasota people of Tampa Bay and the Calusa people in the southern territories.
Archaeological investigations at the site started after 1981 when unauthorized excavators used heavy machinery to search for Spanish artifacts in the mounds.
The architectural layout of these shell mounds does not match any known structural patterns from the Weeden Island or Safety Harbor cultural periods.
Location: Charlotte County
GPS coordinates: 26.80889,-82.21889
Latest update: April 2, 2025 02:53
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