Light it up

A will-o'-the-wisp (/ˌwɪl ə ðə ˈwɪsp/), will-o'-wisp (/ˌwɪl ə ˈwɪsp/), or ignis fatuus (/ˌɪɡnɨs ˈfætʃuːəs/; Medieval Latin: "foolish fire") is an atmospheric ghost light seen by travellers at night, especially over bogs, swamps or marshes. It resembles a flickering lamp and is said to recede if approached, drawing travellers from the safe paths.