Is Lake Valencia or  Lake Nyos in Cameroon?
Lake Valencia (Venezuela): Lake Valencia o Lake Tacarigua (Spanish: "Lago de Valencia' o Lago Tacarigua' ) is a lake within Carabobo State and Aragua State, in northern Venezuela. Lake Nyos: Lake Nyos is a crater lake in the Northwest Region of Cameroon, located about 315 km northwest of Yaoundé.
Lake Nyos