Giovanni Badino is one of the world top ice cavers. Ice caver spend their time inside glaciers - enormous walls of ice that travel very slowly down mountain. One of Giovaani's adventures took place on the gorner glacier in switzerland, Europ's highest glacier. Giovanni led a team that explore hundreds of metres down inside thr glacier. They frequnently had to swim through freezing pools and river 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 Giovaani Badino, we now khow much more about what goes on inside glaciers.