Our continental journey through amazing Africa ranges from evocative early black-and-white pictures to autochromes, from the golden age of Kodachromes to digital. Along the way, we fly over the misty volcanoes of Uganda in a 1950s plane; follow archaeologists into the cool, musky tombs of Egypt; gaze up at the gleaming skyscrapers of Zimbabwe; admire the ritual masks of the Chokwe tribesmen of Angola; get lost in a labyrinth of alleys and souks in Algeria’s old quarters; wonder at the fragile red-tufted flowers of South Africa’s Drakensberg mountains; trudge behind Kenyan farmers as they battle clouds of flying locusts; and gingerly spy mountain gorillas enjoying the Rwandan sunshine.