Warum fehlt die Hälfte des Kolosseums?

Credit: CC BY-SA 2.5 : The Dome inside: by Emőke Dénes :Shell_Grotto,_Margate, Grotto: by Gernot Keller : Coinage of the Marsic Confederation: by CNG - : CC BY-SA 4.0 : Shell Grotto: by Emőke Dénes :Shell_Grotto,_Margate, Maropeng visitor centre: by Olga Ernst :Maropeng_visitor_centre,_Cradle_of_Humankind, Australopithecus africanus: by Rmcrt : Die Animation wurde von SonnenSei