>> we're trying to keep our shoes on in knee-deep mud with this 100-pound kayak moving up. >> they're just like backpacks but 20 times more inconvenient and heavier. >> for sure we're not moving very quickly. probably about a kilometer per day of what we're doing, right? >> if we have to move through the jungle? >> yeah, especially with that gor gorge where there's that up and over, that portage might take us a while. >> the timeline is falling way behind. we're coming to the stark realization that we don't know 100% whether or not being able to actually move through this crazy terrain will actually work