Giovanni Badino is one of the world's top ice caves. Ice cavers spend their time inside enormous walls of ice that travel very glaciers slowly down mountains. One of Giovanni's adventures took place on the Go glacier in Switzerland, Europe's highest glacier. Giovanni hundreds of metres led a team that explor down inside the glacier. They frequently had to swim through freezing pool and rivers of melting ice. Inside the glacier, the ice is always moving, so the team also faced the danger of the caves and tunnels falling in and trapping them. Because of people like Giovanni Badino, we now know much more about what goes on inside glaciers.