If the author means that they reached Somalia from the west coast of Africa, yes, that would be wrong :) I was assuming they meant something different, but as I reread it now I'm not sure what they meant, and I can see where you and Sabertooth are coming from on that. I guess there's quite a bit of debate over what some of the references in the original description of Hanno's voyage mean. I'm looking up some stuff now and here's a link with a good discussion which cites several scholars who identify Cerne as referring to somewhere other than Somalia, contadicting the article's statement that "Most scholars agree that the description fits Somalia":