Great map, my favorite so far, though I agree with Ryan above that between gigantic and huge would probably be the best size. But, my question is this. The jungle in Equatorial S. America and Africa, like all earth maps, uses grassland beneath. Hence, once the jungle is cleared, this becomes the best land for farms in the world, and thus huge cities arise. Yet, isn't such land in reality quite poor for farming, almost to the point of long-term insustainability? Would it be more accurate to use plains or even tundra for some of these jungle areas? I have always wondered about this, and since your maps are so accurate, and thought I might ask here.