Olga Linares De Sapir wrote (in 1971) Going back further in time, Bocas is rich in archaeological sites. Numerous shell-middens dating roughly from A.D. 500 to the time of the Conquest are found in the Bahia de Almirante on ridges away from the coast, at elevations ranging between 300 and 1000 feet.
Indians and mestizos living today in Aguacate Peninsula have noticed these shell heaps oddly placed far away from the coast. Thanks to their aid as guides, and later as workÂmen, it was possible in 1969 to locate the site of Cerro Brujo (CA-3), approximately two kilometers inland from the coast, on a ridge five hundred feet above sea level. During the following season, this spot became the seat of our excavations.
Cerro Brujo (CA-3) consists of five scatÂtered shell-midden clusters within an area roughly one kilometer in diameter.
More in Penn Museum Expedition magazine first published in 1971
https://www.penn.museum/sites/expedition/cerro-brujo/
Incidentally Penn Museum have put online all the articles from their Expedition Magazine from the present day right back to 1958 - now that's what I call impressive digitisation!
https://www.penn.museum/sites/expedition/
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