At the peak of the melt season, Rolex Awards for Enterprise Laureate Francesco Sauro led a team of scientists on a pioneering and perilous expedition into caves beneath Switzerland’s Gorner Glacier. The goal was to discover how melt water contributes to the glacier’s disappearance from the inside. The team used a pioneering collision-tolerant drone to create 3-D models of the caves. They explored deep inside the Gorner’s mysterious caves and what they found will help predict the fate of the glacier.