This Article Cameroon line is composed of Creative Common Content.\n The Original Article can be location at WikiPedia.org.\n The Cameroon line is a chain of volcanoes. \nIt includes islands in the Gulf of Guinea and mountains that extend along the border region of eastern Nigeria and western Cameroon from Mount Cameroon on the Gulf of Guinea north and east towards Lake Chad. \nThe islands which span the equator have tropical climates and are home to many unique plant and bird species.\nThe mainland mountain regions are much cooler than the surrounding lowlands and also contain unique and ecologically important environments. \n\nThe Cameroon volcanic line is geologically unusual in extending through both the ocean and the continental crust. Various theories have been advanced by different geologists to explain the line.