21/01/12. Bahir Dar, Ethiopia. Bahir Dar lies on the banks of Lake Tana, Ethiopia's largest lake. Lake Tana is 68km wide nd 73 km long and is dotted with islands, on many of which are monasteries and churches. Picture shows: Coffee beans being raked while they dry in the sun, in the grounds of Abay Minch lodge. Photo credit: Jane Hobson.