For Decades, Cartographers Have Been Hiding Covert Illustrations Inside of Switzerland’s Official Maps

03 A reclining woman, hidden for almost sixty years in the municipality of Egg
"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. ..."
Eye On Design

04 A spider appears over an ice field on the Eiger mountain