Meredith and Gretchen are getting directions to the cave, and then Meredith seems to be a little baffled by the driving, probably in part because he's driving on the other side of the road, and Gretchen remarks that the rappelling can only be really easy, compared to this suck-ass experience. Oh, I suspect that's not true. Uchenna and Joyce are snagging directions, too.

Caves. Ron and Kelly are still looking for clues, as are Greg and Brian. One of the brothers says to the other, "If you can't handle me stuffin' you in a sleeping bag when you were little, and not lettin' you out..." Wow, they tied each other into sleeping bags? My respect for them grows by the minute. "This is so fun, dude," they add. We also see that Ron and Kelly have missed the fact that the clues are actually inside the cave, and are erroneously looking for them outside, once they've finished crawling through. They realize that they have to head back down, so they do.

Brian and Greg hunt around with their flashlights until they find a clue. It tells them to drive to Soweto, which Phil explains is "transforming into a vibrant city." They'll head to a market there. The boys go, passing Ron and Kelly and generally pointing them toward the clue, in return for which Ron and Kelly generally point the boys toward the exit. Ron and Kelly get their clue. Outside, one of the boys tells the other, "You look like Braveheart, dude." Hee. Oh, boys and the way they can turn anything back into a compliment: "Dude, you totally look like Mel Gibson."

Lynn and Alex finish Tribes and get their clue, directing them to the market in Soweto.

Meredith and Gretchen approach the cave. They get some safety instructions as they get suited up, and Gretchen merrily calls out, "I'll meet you down there!" And then, ominously, "Goodbye, cruel world!" I do wonder, from those remarks, whether she got careless or cocky in the cave. But that's not yet! Let's get there when we do. Uchenna and Joyce are approaching the cave, and they head down as Meredith and Gretchen are at the bottom.