For Decades, Cartographers Have Been Hiding Covert Illustrations Inside of Switzerland’s Official Maps – They’ve eluded one of the most rigorous map-making institutions in the world to do so: “The first three dimensions—length, height, and depth—are included on all topographical maps. The “fourth dimension,” or time, is also available on the website of the Swiss Federal Office of Topography (Swisstopo). In the “Journey Through Time,” a timeline displays 175 years of the country’s cartographic history, advancing in increments of 5-10 years. Over the course of two minutes, Switzerland is drawn and redrawn with increasing precision: inky shapes take on hard edges, blues and browns appear after the turn of the century, and in 2016, the letters drop their serifs. Watching a single place evolve over time reveals small histories and granular inconsistencies. Train stations and airports are built, a gunpowder factory disappears for the length of the Cold War. But on certain maps, in Switzerland’s more remote regions, there is also, curiously, a spider, a man’s face, a naked woman, a hiker, a fish, and a marmot. These barely-perceptible apparitions aren’t mistakes, but rather illustrations hidden by the official cartographers at Swisstopo in defiance of their mandate “to reconstitute reality.” Maps published by Swisstopo undergo a rigorous proofreading process, so to find an illicit drawing means that the cartographer has outsmarted his colleagues. ..”