Each location brings its own epic challenges - whether it\'s the first climb of an arctic ice fall in Greenland, the first recorded navigation of a South American river, or the first exploration of the world\'s longest cave system in Mexico..
Each location brings its own epic challenges - whether it\'s the first climb of an arctic ice fall in Greenland, the first recorded navigation of a South American river, or the first exploration of the world\'s longest cave system in Mexico.