New 3D maps created by geographer ... show not only the rivers, as many maps do, but also the massive, sprawling basins that feed them. You can see maps for the U.S., Europe, Africa and South ...

They say this makes the slab the oldest 3D map of a known area in Europe. The slab was first discovered in Brittany in 1900. The piece of rock, known as the Saint-Bélec Slab, is believed to date ...