[triumphant values]

There were several written systems developed in Africa; Meroitic and Ge’ez were both developed in Africa.

Do you have any from Sub-Saharan Africa that didn't have contact with Mediterranean cultures?

[Little Ray]

Ya know, its pretty hard to find ANY culture that didn’t have contact of one sort or another with Mediterranean cultures.
They’ve found ancient wrecks with amphora in the New World, for heaven’s sake... http://www.freerepublic.com/focus/f-news/1038045/posts

Maybe Australia and New Guinea?