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6,000-year-old fabric reveals Peruvians were dyeing textiles with indigo long before Egyptians

A piece of 6,000-year-old fabric, dyed indigo blue. (Lauren Urana) Take a good look at the piece of cloth pictured at the top of this story. That was made 6,000 years ago by people living on the coast of Peru. Now check out those faint blue lines running through it. Yes, they’re washed out, but you can still see them. This square of striped cotton, and a few others like it, represents the first known instance of people using indigo to dye a textile blue.

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