Excavations at the Puerto Ferro site by Luis Chanlatte and Yvonne Narganes uncovered a fragmented human skeleton in a large hearth area. Radiocarbon dating of shells found in the hearth indicate a burial date of c. 1900 BCE. This skeleton, popularly known as "El Hombre de Puerto Ferro", was buried at the center of a group of large boulders near Vieques's south-central coast, approximately one kilometer northwest of the Bioluminescent Bay. Linear arrays of smaller stones radiating from the central boulders are apparent at the site today, but their age and reason for placement are unknown.