A natural varnish was discovered on 37,000-year-old horse paintings in Chauvet Cave using ultraviolet light
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Summary
In Chauvet Cave, in the Ardèche gorge of southern France, researchers set up a tripod on the steel walkway in the Hillaire Chamber and ran a carbon fiber pole out toward the Horses Panel. Artists drew those horses in charcoal about 37,000 years ago. A lens at the pole’s tip sat 2 inches (5 …
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