Areas of low human impact are comparatively rare now in Guinea, and found only in areas of low population density. One such area is that of the Mafou Forest, the last remaining area of dry forest in Guinea and one of the few left in West Africa. This area has a low population because of the widespread incidences of river-blindness and as a result of the atrocities of Samory Touré in the latter part of the 19th century.