This Tanzanian - Zambian Railway has an interesting piece written on it here : https://newlinesmag.com/reportage/the-tanzania-zambia-railway-tracks-the-history-of-the-cold-war/ I think I saw a documentary on it as well, though it escapes my mind right now where [was it on Chris Tarrant's Extreme Railways series]? Either case, despite in perpetual decline and delays that make Indian Railways look punctual by comparasion, it still has a loyal following [cheap tickets and neat vistas/views definitely help, I guess].
