Which lake is the second-largest by area in Africa and second-deepest in the world?

Lake Tanganyika is indeed the second-largest lake by area in Africa and the second-deepest lake in the world. It spans approximately 32,900 square kilometers (12,700 square miles) and reaches a maximum depth of about 1,470 meters (4,823 feet). This combination of significant surface area and remarkable depth sets it apart from other notable lakes in Africa.

Lake Victoria, although the largest lake in Africa by area, does not match Tanganyika's depth and is actually the largest tropical lake in the world. Lake Malawi, while deep and significant, ranks as the third-largest by area in Africa and is also not as deep as Tanganyika. Lake Chad is a much shallower lake and considerably smaller, making it the least relevant in the context of area and depth compared to the others listed. Thus, Lake Tanganyika's dimensions distinctly define its status as the second-largest and second-deepest, affirming its unique geographical significance in Africa and globally.