Guinea zone The wettest and most wooded savannah zone in the classic threefold model of savannah vegetation, which is based on examples taken from western Africa. These are the Sahel zone, consisting of dry scrub with occasional grasses and patches of bare earth; typical grassy savannah; and the wetter, semi-wooded Guinea zone.

Guinea zone The wettest and most wooded savannah zone in West Africa in the classic threefold model of savannah vegetation. These are the Sahel zone, consisting of dry scrub with occasional grasses and patches of bare earth; typical grassy savannah; and the wetter, semi-wooded Guinea zone.