The Cogdell Light is a mysterious green-yellow glow that appears on Sesame Road near the Okefenokee Swamp in Georgia, said to be a headless brakeman's lantern, the spirits of shot lovers, or even an unexplained natural phenomenon. Legend states it can be summoned by drivers who flash their headlights, causing the light to move from the woods towards their car. What the Cogdell Light Is: A mysterious, greenish-yellow glowing light that appears on Sesame Road, near the Okefenokee Swamp in Georgia. Drivers can attempt to call it by turning off their car and flashing their headlights, after which the light may appear and move towards them from the woods. Various Theories Behind the Light: One theory suggests it is the spirit of a brakeman who was decapitated in a train accident, carrying his own lantern. Another belief is that the light comes from the lantern of two lovers who were shot by their father. A less common theory suggests the light belongs to the spirits of Confederate soldiers ambushed during the Civil War. While some dismiss it as swamp gas, the light's persistent and punctual nature suggests otherwise, according to the article.