11 dezembro 2019

Ancient Settlement On Florida Island Revealed By Lasers

Drone-mounted lasers appear to have detected details of the architecture of an ancient island settlement off Florida’s Gulf coast, using 3D mapping technology. Archaeological remains were first noted on Raleigh Island in 1990. In-person exploration of the area in 2010 revealed the presence of a settlement dating from 900 to 1200 CE.

Unfortunately, the island’s dense foliage impeded traditional land-based surveys of what remained. That’s why this drone-based laser survey, almost ten years later, is so important.

Among other details we now can see 37 residential areas “enclosed by ridges of oyster shell” that are up to 12ft (4m) tall. Archaeological digs at 10 identified residential areas found evidence that beads made from large marine mollusks were produced in these settlements. Stone tools, used to make the beads, were also found. The beads were likely for import among inland chiefdoms. In areas that were far from the coast, such as the lower midwest of the US, mollusk beads and even sizable sea mollusks were imported, where they were used as social capital in economic and social interactions between groups.

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