This book presents comprehensive data on the petrography, geochemistry, mineralogy and radiogenic isotopes (Pb, Sr, Nd) of lavas from Mounts Cameroon and Etinde volcanoes. In the case of Mount Cameroon, both prehistoric and modern lavas have been studied; allowing the petrochemical evolution of the volcano to be assessed. For Mount Etinde, these new data have allowed the petrological and mineralogical diversity of the volcano to be unraveled. The entire dataset from both volcanoes has been interpreted in view of establishing the petrogenesis of the lavas and petrogenetic processes responsible for the geochemical evolution of the volcanoes. This pioneer monograph uniquely prepared for Mounts Cameroon and Etinde presents a valuable reference document that provides an insight to understanding the magma transport mechanisms within the Mount Cameroon plumbing system and adds to the plethora of scientific articles that have already been released on the geochemistry of the Cameroon Volcanic Line.