Ghost lights are luminous phenomena, usually either points of light or spheres, whose appearance, behavior, location, or regular manifestation puts them, at least ostensibly, into a separate category from ball lightning or a U.F.O. They are thought to be of a natural origin, possibly pertaining to earthquakes, fault lines, railroad tracks, or water sources but remain a mystery. Most such lights have a legend attached to them, usually involving a person that has been beheaded. The light is then explained as this person searching for their head.
Ghost Lights in English folklore are referred to as “Will o’ the Wisp” and are usually located over bogs, swamps, and other murky areas. These ghost lights recede when they are approached, often leading travelers astray and into danger.