When we see something frightening headed towards us, one of the most obvious involuntary actions is to pull a stupid face. But why are all of these people so scared?

It turns out that they're at the Nightmares Fear Factory in Niagara Falls, a haunted house attraction that is famous for scaring the hell out of its customers. As you can see from the pictures below, they're pretty good at doing their jobs. A look through their Flickr will turn up plenty of frightened faces that are caught on camera during a scare, but we've take a few of our favorites and posted them down below.

Nightmares Fear Factory
Nightmares Fear Factory
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Hah! They're so frightened that they're trying to run away in different directions!

Nightmares Fear Factory
Nightmares Fear Factory
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The girl on the left is feeling fright so strong that her hair's going all cray-cray.

Nightmares Fear Factory
Nightmares Fear Factory
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We have no clue what the dude on the left is doing, but it needs to become a dance crazy, NOW.

Nightmares Fear Factory
Nightmares Fear Factory
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We absolutely love when folk are scared enough to use their loved ones to protect themselves.

Nightmares Fear Factory
Nightmares Fear Factory
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That's either an A+ scared face, or this guy's best Heisman trophy pose.

Nightmares Fear Factory
Nightmares Fear Factory
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"Take my ticket! Take my jacket! JUST STOP SCARING ME!"

Nightmares Fear Factory
Nightmares Fear Factory
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We suppose that a second after this picture was taken, these two boys melded into one giant scaredy cat.

Nightmares Fear Factory
Nightmares Fear Factory
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There's a chain of arms, a guy who looks incredibly pained and a lot of confusion. But what they didn't see was the extra pair of arms in the background. Oh, no!

Nightmares Fear Factory
Nightmares Fear Factory
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Every face shown here is absolute GOLD.

Nightmares Fear Factory
Nightmares Fear Factory
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Imagine how scared you'd have to be to clutch onto another person like a koala.

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