Meet Dr. Ndukauba Egesi, Professor of Geology, University of Port Harcourt, Nigeria. He has spent more than 30 years mapping the geology of Nigeria. His wealth of knowledge of the karst regions of Africa are indispensable to this project. Although he has seen and studied a wide range of rock types exposed on the surface, this research has opened his eyes to the hidden wonders underground. In Grotte de Camp Malheur, Dr. Egesi admires a particularly large stalagmite. Above him, a stunning cave drapery forms along a fracture line like.