Naturalist and explorer Steve Backshall leads a team on a mission to summit a remote and unclimbed mountain in the Stauning Alps of Greenland. To reach their mountain they will have to cross a vast melt-water river and contend with quicksand before skiing across a glacier - and that’s just to reach basecamp. They’re close to the Greenland Ice Cap, which holds 80% of the Arctic’s fresh water. Climbing this mountain gives Steve and his fellow climbers a unique insight into an environment that’s changing fast.
Adventurer and naturalist Steve Backshall is on a quest to explore parts of the planet where no humans have been before. In this episode, he leads a team of elite explorers - including world leading underwater cave explorer Robbie Schmittner, former Royal Marine Aldo Kane and diving camera operator, Katy Fraser, into the wilds of the Yucatan Peninsula in Mexico. Under the vast jungle here is the largest unexplored network of caves in the world. There are thousands of kilometres of passageways. They’re beautiful, but, with much of the cave system submerged, it's incredibly dangerous. First they must trek through kilometres of tough, scorpion-infested jungle to camp alongside a giant sinkhole in the jungle floor. With only an estimated one per cent of the caves explored, it’s an opportunity for the team to push further than anyone has gone before. This is a challenge that would test even the most accomplished cave diver; Steve must face the terror of being lost underwater in an underwater silt cloud.