A view of a section of the 500 years old Kofar Mata dye pits in

A view of a section of the 500 years old Kofar Mata dye pits in the northern Nigerian city of Kano on September 8, 2013. The dye pits established in 1498 has remained alive despite economic downtown Get premium, high resolution news photos at Getty Images

Map of Kano city showing the three dyeing activity sites; Kofar Mata

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Inside the dying 522-year-old dye pit of Kofar Mata