Keuroghlian contacted Aguiar, a regional specialist in cave drawings who determined that the drawings were made between 4,000-10,000 years ago by hunter-gatherer societies that either occupied the caves, or used them specifically for their artistic activities. The style of some drawings, Aguiar noted, was consistent with what archeologists call the Planalto (central Brazilian plateau) tradition, while others, surprisingly, were more similar to Nordeste (northeastern Brazil) or Agreste (forest to arid-land transition in NE Brazil) style drawings. The drawings depict an assemblage of animals including armadillos, deer, large cats, birds, and reptiles, as well as human-like figures and geometric symbols. Oddly, the subject of the WCS surveys in the area — peccaries — are absent from the illustrations. Aguiar hopes to conduct cave floor excavations and geological dating at the sites in order to fully interpret the drawings.
Story: Science Daily | Photo: Alexine Keuroghlian, WCS