The catastrophic geomorphological processes in humid tropical africa : a case study of the recent landslide disasters in Cameroon. By Appolinaire ZOGNING, Chrétien NGOUANET and Ojuku TIAFACK. INTRODUCTION Located at the interior of the Gulf of Guinea, Cameroon extends from Latitudes 2° to 13° North and Longitudes 9° to 16° East. Better known as Africa