We were up at 5 this morning for a 6am ride to the airport to go to Bahir Dar, an hour's flight north. The flight was smooth and we landed around 8:30. Bahir Dar is the home of Lake Tana, source of the Blue Nile which flows 900 miles north to Khartoum where it joins the White Nile and flows on through Egypt to the Mediterranean. The longest river in the world*. We are staying near where the river flows out of the lake. After dropping our luggage at the hotel, our guide Mas and driver Tardi took us on a ride, maybe 90 minutes over increasingly rough roads past…