Tanzania, Kigoma, Sunset over Lake Tanganyika.Lake Tanganyika, an immense inland sea set in a long, low, deep trough of the Western Rift, is the biggest lake of Africa's Great Rift Valley system. Its 410-mile-length distinguishes it as the longest freshwater lake in the world. With a depth of 4,710 feet, it is also the world's second deepest; only Lake Baikal in eastern Siberia is deeper.

- Image ID: B3TH9J
Tanzania, Kigoma, Sunset over Lake Tanganyika.Lake Tanganyika, an immense inland sea set in a long, low, deep trough of the Western Rift, is the biggest lake of Africa's Great Rift Valley system. Its 410-mile-length distinguishes it as the longest freshwater lake in the world. With a depth of 4,710 feet, it is also the world's second deepest; only Lake Baikal in eastern Siberia is deeper.
John Warburton-Lee Photography / Alamy Stock Photo
Image ID: B3TH9J
Tanzania, Kigoma, Sunset over Lake Tanganyika.Lake Tanganyika, an immense inland sea set in a long, low, deep trough of the Western Rift, is the biggest lake of Africa's Great Rift Valley system. Its 410-mile-length distinguishes it as the longest freshwater lake in the world. With a depth of 4,710 feet, it is also the world's second deepest; only Lake Baikal in eastern Siberia is deeper.
Location: Mahale Mountains, Kigoma, Tanzania