But, there is not much difference from my version, where I am taking the Afar region as being barren volcanic. This is the same theory.

        There is another similarity, Bioko is on Cameroon Line, which is also rift, but this one is older than the rift in East Africa. Apes emerged at the time of formation of rift that is in East Africa.

        So, you are, basically, saying the same thing as me, only I am giving additional arguments for living on cliffs.

        So, if you compare Afar and Bioko, Afar is the same thing, only it has more arguments.