A jack-o'-lantern (or jack o'lantern) is a carved pumpkin or turnip lantern, associated with the holiday of Halloween and named after the phenomenon of a strange light flickering over peat bogs, called will-o'-the-wisp or jack-o'-lantern. In a jack-o'-lantern, the top of the pumpkin or turnip is cut off to form a lid, the inside flesh is scooped out, and an image — usually a monstrous or comical face - is carved out of the rind to expose the hollow interior. To create the lantern effect, a light source is placed within before the lid is closed. The light source is traditionally a flame such as a candle or tea light, but artificial jack-'o-lanterns with electric lights are also marketed. It is common to see jack-o'-lanterns on doorsteps and otherwise used as decorations prior to and on Halloween.