This haunted house takes photos of people's reactions to getting scared - and it's hilarious

According to Nightmares, the legend behind the haunted house is a classic ghost story.

Abraham Mortimer owned the Cataract Coffin Factory and was routinely tormented by local kids who said he was "eccentric."

It was all in good fun until one fateful night, when during a struggle between Mortimer and more "hooligans," Mortimer was supposedly crushed to death by empty coffins.

While his tormenters escaped, never to be found, Mortimer's own coffin was found empty after his funeral. Legend has it he's been lurking the halls of his shuttered coffin factory ever since.

Not everyone makes it all the way through. According to Nightmares, more than 135,000 people have chickened out during their experience — which reportedly only lasts 10 to 15 minutes.

Survivors of Nightmares have similar things to say regarding the attraction, including survivor Deanna Lynn, who reviewed her experience on their website: "I pretty much sh*t my pants, no big deal."

Luckily, we got the scoop on how these images are taken inside the factory.

There are a total of three cameras inside the factory. Two are still cameras, and one is for video.

Nightmares doesn't rely on the usual blood and gore haunted house stints.

Live actors are inside the factory creating a unique experience for each visitor. While their reactions vary, they are all a product of absolute horror.

It is pitch black inside the factory — you can't even see your hand in front of your face.

Throughout the tour, you follow a trail of red lights for as long as you're able.

During one part of the tour, you must physically hang on to the group you're with in order to find your way through. It's at this moment that the images are taken.

It's not advised to go alone.

For those who just can't take it, saying the code word is "Nightmares!" will get you pulled out before the end.

Open for more than 30 years, the factory has become more popular since it began making these reactions shots available to the public.

It's so frightening, the factory advises pregnant women and those with heart conditions to stay away.

As the images show, even grown men can't handle Nightmares Fear Factory.

This brave man is leading a group of five through the factory.

Since we don't know exactly what these visitors are seeing at the time the photos are snapped, it's hard to judge their reactions too harshly.

But it's clearly something really frightening.