Beneath the thick ice of Antarctica, scientists have discovered an amazing hidden world. There are large mountain ranges, deep valleys, and even volcanoes buried under the ice sheet. These features are not visible from the surface, but special tools like radar and satellite imaging have revealed what lies below. One major discovery is the Gamburtsev Mountain Range, a huge group of mountains about the size of the Alps. These mountains are completely buried under ice, yet they stretch over 1,20...