Cameras follow the team every sweaty step of the way as they explore the beautiful wilderness of Guyana, from abseiling down one of the most powerful waterfalls in the world to climbing to the very top of the rainforest trees. Known as the land of giants, Guyana is home to the huge anaconda, the world's largest tarantula and giant otters

Gordon Buchanan goes in search of the elusive jaguar, while Steve Backshall abseils down one of the most powerful waterfalls in the world to see the creatures living there. Meanwhile, Justine Evans climbs to the top of the rainforest trees in search of monkeys and macaws and George McGavin explores rotten logs for whip spiders.