In the heart of central Europe, in the middle of a deep, dark forest, lies a mountain range that changed the world. It’s smaller than the Alps, less dramatic than the Dolomites, and far less romantic than the Carpathians. And yet, its place in modern European history is so vast, so great, that its reputation could dwarf even the Himalayas. Known as the Sudetes, this borderland between the forests of Germany and the hills of the Czech Republic may not be famous. But the region around it is. In 1938, the Sudetenland helped plunge Europe into war.