Okay, now that we have more pics of Boston Rob, who is clearly chopping that wood, I'd like to take another chop at this challenge.

This challenge seems to be run one person at a time. Grant is going for the shovel by the trunk, then will run out to the raised bed and dig most likely for some keys. When he finds the key, he'll run back to open the trunk, perhaps, and then grab something out of there. He is competing against Julie. Note that both shovels are red, Grant may be a little behind, but I bet he could catch up and maybe even get them a lead.

We see that Rob is tasked with chopping completely through that secured log on the table. When the log is in half, perhaps that relax's that rope and he can get something else, or raise a flag or whatever.

These vidcaps show a VERY concerned Zap tribe, Steve is JUMPING and Stephanie is screaming as most likely Krista is competing and it's very, very close....

Don't know what those trunks are really for, maybe there is a puzzle in there? But, they are there for a reason. One thing I think is that it's going to be a very close finish...