Few volcanic chains on the planet cross both oceanic and continental crust — the 'Cameroon Line' is one of them. Running roughly 1,600 kilometres from southwest to northeast, it links the Gulf of Guinea islands — Annobón, São Tomé, Príncipe, Bioko — to the edge of Lake Chad.
Mount Cameroon opens the mainland stretch, followed by the Manengouba, Bamboutos and Oku massifs, then the Kapsiki Plateau. In total, the line strings together roughly sixty volcanic centres, active and extinct, along this unique corridor.
Sources: Wikipedia (Cameroon line), Springer ('The Cameroon Line').
