This nation is home to the Oku volcanic field, as well as Lake Monoun.
This nation is home to the Oku volcanic field, as well as Lake Monoun. The northeastern part of this nation is separated from the rest by the Adamawa Plateau. This nation's major river is the Sanaga, which empties into the Atlantic Ocean. Directly off the coast of this nation, but controlled by its southern neighbor, is the island of Bioko and its capital of Malabo. This nation's Lake Nyos underwent a limnic eruption in 1986, killing over a thousand people from asphyxiation with carbon dioxide. This nation has a strip of land that runs north into Nigeria, giving it access to Lake Chad. For 10 points, name this former German colony in Africa, whose capital is Yaounde. 
This nation is home to the Oku volcanic field, as well as Lake Monoun.
Cameroon