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The paintings were discovered during a 2017 survey by Indonesian and Australian researchers. Using laser‑ablation U‑series dating on calcium‑carbonate deposits layered over the art, they ...
Guidon first documented the red ocher cave paintings in the semi-arid state of Piaui in the 1970s. These ancient artworks, made with natural pigments such as iron oxides and charcoal, depict deer ...
RIO DE JANEIRO (AP) — Niède Guidon, the Brazilian archaeologist known for discovering hundreds of prehistoric cave paintings in northeastern Brazil and for her research challenging theories of ...