A big part of being on The Amazing Race sometimes involved conquering a fear, but a debilitating case of claustrophobia could hurt Erin and Joslyn as they continue their travels through Colombia.

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The Clevver girls quickly moved up in the standings by placing 5th on the second leg, but as the race continues, they could hit a major problem when they have to complete a task in the catacombs--which are underground, dark, and cramped. And that won't go well when Erin's claustrophobia kicks in.

"Get us out of here, I'll do whatever it takes," she says to Joslyn in a preview clip for the Friday, February 26 episode.

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However, as they continue working through the task, her fear is only going to grow and cause more problems, because the situation will start becoming far too much for her to bare.

"Oh, I'm so claustrophobic," she says.

And at one point, it genuinely could prove to be what does the pair in, as it could begin affecting her health--meaning if she doesn't get back above ground quickly, not only wil their race be over because of an elimination, but she could wind up in a hospital as well.

"You've got to keep breathing," Joslyn says to her in the clip.

The Amazing Race airs Fridays at 8 p.m. on CBS.

Tags: The Amazing Race CBS Reality TV