This makes monsters under the bed sound tame: A woman in Guatemala City heard a loud noise on Monday and tracked down the source—a 40-foot-deep sinkhole under her bed. "When we heard the loud boom we thought a gas canister from a neighboring home had exploded, or there had been a crash on the street," says the 65-year-old. "We rushed out to look and saw nothing. A gentleman told me that the noise came from my house." A search uncovered the hole, which is 32 inches in diameter, reports the AFP. (Click to see a much larger sinkhole that formed in Guatemala City last year.)