German train map

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Every map holds a promise, and hides a lie. Cartography purports to represent reality, so the map reader can navigate the world. But maps only exist because their makers manipulate reality, if only by selecting what to show. Maps always represent some kind of truth, but never the whole truth. If you know who made the map, you’re generally able to make a stab at the narrative behind it - and which story it isn’t telling.

Take this map of the urban transport network (1) in Berlin. At face value, it is a purely utilitarian map, giving its readers a no-nonsense, schematic overview of the transportational possibilities of the German capital. But context matters: this map was produced by the East German government, for its captive citizenry. It mixes information with propaganda as it tries very hard to ignore an inconvenient truth - too big to hide completely: the existence of another Berlin.

During the Cold War (1945-1989), world politics interfered with even the most basic elements of German toponymy. The country was divided in an eastern and western half, aligned with the Soviet and Western blocs respectively. The nomenclature reflected either state’s carefully maintained fiction that only it represented Germany as a whole (2). West Germany never officially referred to itself as ‘western’ but called itself the Bundesrepublik Deutschland (Federal Republic of Germany). Similarly, East Germany never self-applied the moniker Ostdeutschland, but chose Deutsche Demokratische Republik (German Democratic Republic). The geographic, limitative name was generally reserved for the other half (3).

This national schizophrenia was replayed on an urban level in Berlin. Its eastern half was capital of East Germany, the Soviets’ most westerly outpost in Europe; its western half an enclave of West Germany, and a showcase for its Wirtschaftswunder (4). Both hemi-cities aspired to be Berlin’s one and only true incarnation, uncorrupted and unoccupied by the evil forces of either communism or capitalism. Hence the reluctance of either side to label itself as merely half of Berlin - official certificates for birth, marriage and death in both parts of the city were always issued in ‘Berlin’.

The official East German nomenclature treated the city’s division with the most circumspect of euphemisms - at least when referring to its own half, successively Groß-Berlin, demokratischer Sektor (Democratic Sector of Greater Berlin) over demokratisches Berlin (Democratic Berlin) to Berlin, Hauptstadt der DDR (Berlin, Capital of the German Democratic Republic). Never, ever: Ost-Berlin. After all, it was the Wessis who were enclaved, not the Ossis (5). Those Ossis therefore had no qualms in referring to the western sector as Westberlin or Berlin (West), whichever sounded more diminutive. Correspondingly, the official West-German names for East Berlin were Berlin (Ost), Berlin (DDR), Ost-Berlin, Ostberlin, and even Ostsektor (Eastern Sector).

Because of its special political geography, Berlin became a flashpoint in the Cold War, which almost turned hot when the Soviets blockaded the city’s western half in 1948. The freedom and prosperity of West Berlin also challenged the communist East’s claims of moral superiority (or at least equivalence). The hemorraging of East German talent, ‘voting with its feet’ to live in the West, led to the construction in 1961 of the Berlin Wall (6).

This map shows what happened next in the minds of the East German authorities: West Berlin atrophied, ceasing to exist as anything but a minor irritant to cartographers.The area served by the green S-Bahn is proudly marked as Berlin, its lines overflowing into the neighbouring districts of Potsdam and Frankfurt-an-der-Oder. A clever ruse explains the diminutive size of Berlin (West): the lines extending westward into Potsdam district are shown on a separate map, overlapping the main map. The missing distance is rendered by arrows, connecting the lines on both maps. Those lines completely encircle West Berlin, greatly diminished by the overlap. Intriguingly, the overlap, where East eats West, creates two holes in the Staatsgrenze (national border) between both Berlins. Loopholes in the East’s cartographic logic? The encircling East Berlin lines look a bit like Pac-Man, the puny West Berlin nothing more than a freshly eaten, half-digested enemy.

• Marble and granite showroom.