I never flew in Africa. So hopefully someone else can post info on that. A possible source would be a travel agent and look for packages offering scenics etc. Note the name of the company and search them out.
I flew out of Kununurra (Western Australia) for about 18 months or so doing scenics and govt charter work. hard work, lots of variety. Started on C206's. Ended up flying C207's and C210's as well as the Partenavia's.
Later I flew Islanders for Coastwatch out of Broome (Western Australia). Got to see a good part of the coast line nice and close.
It was fun.