Petrified croc skull.
We move to a challenge course that appears, at first, simply to be composed of a long strip of dirt with a series of poles along it. Jeff brings in the tribes, explaining how Margaret was booted by Nakum and Brian by Yaxha. Jeff explains that the challenge will involve four team members wrapping thirty feet of material around themselves and then unwrapping it. The way it works is that one person goes to the pole with the first bunch of material wrapped around it, and he unspools the material from the pole and onto himself. Spinning, or whatever. Then, he goes to the next pole where another person is waiting. The two of them then wrap a load of material around both of their bodies, then they do the same with the next person and the next. Then, they gradually start to unwrap, releasing one person at a time. A fifth tribe member will act as a sort of facilitator, helping them wrap and helping them move from one pole to another without falling over. It's one of those that's really hard to envision if you've never been put in the position of sharing a sarcophagus.