Africa's Blue Nile is a river located in the northeastern part of the continent. It is a major tributary of the Nile River, and is the longest river in Africa. The Blue Nile originates in Ethiopia and flows through Sudan before joining the White Nile in Khartoum, Sudan. It is an important source of water for the region, providing irrigation and hydroelectric power. The Blue Nile is also a popular tourist destination, offering stunning views of the surrounding landscape.