Lake Tana Near Semien Mountains, Ethiopia – January 28th, 201112.0N 37.3E
Lake Tana (lower left quadrant), in the Ethiopian highlands, appears bright green due to sediments and algal growth. The Lesser Abay River flows into the lake by the dark green notch on the southwestern shores. Lake Tana, in turn, gives origin to the Blue Nile River.
Visible to the northeast of the lake are the Semien Mountains, in northern Ethiopia, northeast of Gondar. The mountains consist of plateaux separated by valleys and rising to pinnacles. The tallest peak is Ras Dashen (4,543 m); other notable heights include Mounts Biuat (4,437 m) and Abba Yared (4,460 m).