Drones reveal secrets of ancient Florida village

Drones reveal secrets of ancient Florida village
A drone equipped with Light Detection and Ranging quickly collected architectural details and topographic data about the Raleigh Island settlement with unprecedented resolution. The images revealed rings made of oyster shells surrounding 37 residences. Credit: University of Florida

Using drone technology, a team of UF researchers has uncovered how an ancient Florida village played a pivotal role in pre-Columbian geopolitics.

In research led by anthropology Ph.D. student TERRY BARBOUR, the team discovered that the on Raleigh Island, located on the northern Gulf coast of Florida around 900–1200 AD, operated as a major producer of beads made from seashells. The beads, used in rituals at the time, were highly prized in communities as far from the coast as the lower Midwest.

"In form, scale and purpose, the Raleigh Island settlement has no parallel in the archaeological record of the American Southeast," said KEN SASSAMAN, Barbour's advisor and the co-creator of the study. Sassaman is the Hyatt and Cici Brown Professor of Florida Archaeology in the Department of Anthropology.

The researchers used drones to survey the in a fraction of the time traditional methods would have taken. Working with UF partners at the GatorEye Unmanned Flying Laboratory, the team equipped the drone with Light Detection and Ranging (LiDAR) scanners that quickly collected architectural details and topographic data with unprecedented resolution.

The LiDAR shed light on how the settlement—a complex of at least 37 residential spaces surrounded by 4-meter-tall ridges of oyster shells—was organized to make beads in the very place where shells were found. In several of the living spaces, the researchers' excavations uncovered ample evidence of large-scale bead production.

The Raleigh Island settlement is one of the few coastal communities where such extensive craft production has been found.

"What we have here is a settlement at the source of this raw material at the time when marine shell was starting to become a heavily demanded social item," Barbour said. "The fact we have strong evidence of bead manufacture at a site with equally impressive architecture to guide us in understanding how production was organized socially makes this place really special, and as of now the only place like it we are aware of."

The findings have been published in Proceedings of the National Academy of Sciences.


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More information: Terry E. Barbour et al. Rare pre-Columbian settlement on the Florida Gulf Coast revealed through high-resolution drone LiDAR, Proceedings of the National Academy of Sciences (2019). DOI: 10.1073/pnas.1911285116
Citation: Drones reveal secrets of ancient Florida village (2019, November 6) retrieved 13 December 2019 from https://phys.org/news/2019-11-drones-reveal-secrets-ancient-florida.html
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