If you've ever wanted to be locked in a coffin for 30 hours and win $300 for it, head to the Six Flags in St. Louis, Missouri. The roller coaster park said the 30-hour Coffin Challenge marks 30 years of its Fright Fest Halloween festivities. The challenge will have six contestants closed inside "slightly used" 2-foot-by-7-foot coffins from 1 pm to 7 pm on October 14th. A six-minute bathroom break will be allowed each hour and each participant will be allowed to have a friend with them, who will remain outside of the coffin. One overall winner who lasts the 30 hours will receive a $300 prize. Participants will be chosen from a pool of interested individuals who sign up on the park's website .