The Bridgewater Triangle is an area of about 200 square miles (520 km2) within southeastern Massachusetts in the United States. Since colonial times the area has been a site of alleged paranormal phenomena, ranging from UFO and “black helicopter” sightings (including many with multiple points of corroboration including police and a local news team), to poltergeists and orbs, balls of fire and other spectral phenomena, various “bigfoot” sightings, giant snakes and ‘thunderbirds’, as well as the mutilation of cattle and other livestock. Central to the area is the mysterious and largely untouched Hockomock Swamp, which means “the place where spirits dwell”, and which was called “The Devil’s Swamp” by early settlers. The Triangle also has been known to house several Indian burial grounds.
One of the most common phenomena reportedly observed in the area is “spooklights” or what otherwise matches the description of will-o’-the-wisp, sometimes known as ghost lights which are typically seen in boggy or swampy areas. The behavior of this phenomenon is consistent with mysterious lights allegedly observed within the Bridgewater Triangle, including those which are said to appear along train tracks every January.