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Mound Key

  • The people who constructed Fort San Antón de Carlos had to adapt to Mound Key’s unique conditions, researchers said. The fort is the only Spanish structure built atop a shell mound in Florida.
    Encore: New Research Confirms a Spanish Fort was Built on Mound Key in the 16th Century
    John Davis
    In recognition of March being designated Florida Archaeology Month, we’re listening back to a conversation with archeologist William Marquardt, Ph.D., about his findings published in the journal “Historical Archeology,” confirming the existence of Spanish fort built on Mound Key in Estero Bay in 1566. Mound Key was the capitol of the Calusa Native American tribe which dominated the region and had occupied Southwest Florida for more than 1,000 years at that time.