Erica and Derek are the first to rappel down the waterfall. TPTB make a big point of showing Derek saying that the rope is hot, even though he's wearing gloves, so I wonder if that might be what leads to the ambulance? Also, they made a big deal out of when Theresa fell earlier and gave herself a fat lip. If they show these things, they must be important at some point, yes? Let's hope so.
Miles and Brandee are still trying to unlock the lock. Finally, they figure out that they were lining the numbers up in the wrong spot. Oops. Brandee is annoyed that Miles didn't use his male powers of unlocking to get the job done. I don't think opening a lock is male or female. It's not like in high school, all the dudes were pulling out their math textbooks while the ladies were just spinning the dials helplessly, right?
Derek and Erica surge ahead while the others struggle with their mules. Well, Skip is struggling, and he ends up carrying one of the crates himself. I guess the idea is that the mule will go faster with a lighter load? I don't think that's the mule's problem. Skip takes it out on the mule with verbal abuse. Again, I don't think the mule minds. I don't think the mule understands that you are calling it a loser.
Skip ends up at the waterfall at the same time as Samantha, who has Ben waiting for her at the bottom. He actually starts before Samantha, and then she passes him while rappelling down, which is pretty awesome. Mostly because I hate Skip. Meanwhile, Miles and Brandee are stuck at the part where they have to use a crowbar to open their crates because neither of them knows how to use a crowbar. It's a simple lever. Did you never take basic physics or, I don't know, live in the world? Miles is trying to use it by holding it right near the part that's supposed to be prying. Hello? I mean, I hated physics in high school but I understand how a lever works and how it allows you to multiply the force used or whatever, right?