Brandon emerges from the hole (hee) and Chip heads down. He pulls the satchel out. Up at the top, Lance gets his harness on and heads in. Brandon and Nicole pour out the puzzle pieces. "Are you good at puzzles?" he asks her.
Mirna blows her whistle as she and Charla approach the camels. I tend to doubt that the guys running the camel task stay because of the whistle, but that's what the sequence suggests. Charla now says that at she was running to the horses, it struck her that the horse is big, and she hasn't ever ridden a horse before. So, of course, she starts whining and needs Mirna to tell her to ride the horse. Oh, no. She DOESN'T. The guy lifts her up on the horse, and she's sort of taking an attitude like, "Oh, well, I guess this is what's next." Mirna tells her she looks "like a true jockey." Oh, cram it. They ride off on their horses, impressed with all the natural beauty.
Brandon pronounces himself "baffled" by what to do with the now-assembled puzzle, as Lance emerges from the cave with the satchel. When the teams compare, Chip and Kim and Brandon and Nicole notice that they've got identical slivers out of their puzzles, so that's obviously on purpose, and it presumably represents where they're supposed to go. These two teams, and Marshall and Lance, take off.
Mirna blathers about being in Lawrence of Arabia as they ride their horses. It's a beautifully shot sequence, but I really wish she would stop talking.
Lance has located the Detour clue, and he waves his arms to bring Marshall and the other teams over. They all note that the Humping and Riding is over for the evening, so they'll apparently be doing the rock hauling.
The Twinkies, while they have not successfully managed to follow the path, notice the open shaft that's presumably lit up with TV lights in the approaching dusk. They walk over to it, and read the clue. Kami goes down to do it, and she calls back up, "Karli! What does the satchel look like?" Yeah. There are two possible interpretations. One is that Kami is worried that there will be bunches of satchels down underground, and she won't know which one to bring back up. The other is that she doesn't know what a "satchel" is. Any guesses?
The sun goes down as tense music follows us back to the Charla/Mirna horse and camel parade. Charla marvels about viewing the pyramids from a horse, and I'm quite prepared to agree that that would be remarkable indeed. They get off their horses and pull a clue that tells them to get themselves to the Sphinx. Charla and Mirna run for it.