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SINKING SPRING, PA — A haunted house is daring its visitors to go through naked.

Organizers of the haunted house in eastern Pennsylvania are calling it the “Naked and Scared Challenge” at Shocktoberfest.

The challenge was inspired by the Discovery channel’s hit show “Naked and Afraid.” Visitors can either go through the haunted house totally nude or with undergarments. The attraction takes place at the end of the night after all other customers have gone through the haunted house.

Participants must be 18 or older and sign a waiver.

According to the event’s website, Shocktoberfest created the experience to push visitors out of their comfort zone.

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