Jungle expert Michel Boeijen and Surinamese guide Ile Opodi join Steve on his journey.
Everyone joins together to help navigate two boats packed with kit through rough waters.
During their time on the river, Steve and Aldo spot capuchin monkeys and capybaras.
The team celebrates when they come across an immense waterfall on the river.
Hidden in the tangled web of forest, there are over 7,500 species of plants and animals.