File:Kano dye cloth pit.jpg - Wikimedia Commons

BBC News Africa - The Kofar Mata dye pits in Kano, Nigeria

Dye pits kano nigeria hi-res stock photography and images - Alamy

Tie-dye - Wikipedia

African textiles - Wikipedia

5 centuries in business: Nigeria's ancient dye pits

Dye pits kano nigeria hi-res stock photography and images - Alamy

Kofar mata dye pits nigeria hi-res stock photography and images

5 centuries in business: Nigeria's ancient dye pits

5 centuries in business: Nigeria's ancient dye pits

5 centuries in business: Nigeria's ancient dye pits

Why Nigeria's historic dye pits in Kano risk closure

Indigo, ash and time mark Nigeria's centuries-old dye pits