This Rock Art in China Has Remained Bright Red for Nearly 2,000 Years. How? The Secret Ingredient Might Be Blood
/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/e5/61/e561f163-9c70-442d-b379-f78f81765787/rock-painting.jpg?ssl=1 "This Rock Art in China Has Remained Bright Red for Nearly 2,000 Years. How? The Secret Ingredient Might Be Blood")
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A new study offers clues about how the Luoyue people created rock paintings in what’s now southern China. The murals have somehow been durable enough to withstand rain, heat, wind and humidity for centuries