A phenomenon of lights reported near Marfa, Texas, a small town in the southwest part of the state. Accounts of the phenomenon go back to when the town was first settled and continue to the present. The lights may be seen at several sites between Marfa and Alpine, Texas, when looking in a southwest direction toward the Chinati Mountains. The lights resemble car headlights and are seen to move mysteriously across the desert floor. They have been photographed on numerous occasions.
The Marfa lights fall into a larger group of phenomena collectively termed ghost lights. At present, the nature of the Marfa lights is unknown.