Satan's Mouth

Satan's Mouth was discovered in 1987 in ████████, Peru by archaeologists looking for abandoned tombs. Someone tripped into it and came back out of the mouth injured and charred. Pictures of the inside of the mouth do resemble human insides, and the damaging factor is believed to be caused by a small pool of acid. All expendables that went into Satan's Mouth survived. The teeth around Satan's Mouth are not sharp, it is believed it is meant to trip victims into the mouth. It isn't believed to cause to much harm, so its threat level remains a 2. Since Satan's Mouth can not move, it can not be breached.