in africa, where people have dark skin, it is difficult to make
coloured tattoos as we know them.
but they want to be tattooed anyway, so they have developed
another technique - they make scarifications (this is not really
tattooing, but it is related to tattooing). made by lifting the skin a little,
and making a cut with a knife or some other sharp thing
special sands or ashes were rubbed in to make raised scars
in patterns on the body, it can be felt like braille lettering...
these patterns often follow local traditions.