Bahirdar is Situated on the southern extremity shoreline of Lake Tana, Bahirdar is a decidedly attractive town with palm-lined avenues and pretty lakeside vistas. Nearby Lake Tana, 1,800 meters above sea level, is one of the long hidden source of the Blue Nile. The Tiss Isat falls (meaning water that smokes) are 32 kms down from where the Blue Nile leaves the lake towards Khartoum. Approached by foot up a long winding path and crossing a 17th century bridge built by Emperor Fasiledes, the falls cascade down 45 meters over a 400mts area. Lake Tana's 3600 sq.kms the third largest lake in Africa and the first from the country, surface is dotted with more than 30 islands, many of which are the sites of monasteries and churches, some dating from the 14th century in the reign of Emperor Amde Tsion.