Walter de la Mare was a 20th century English poet best known for his poem "The Listeners". The poem describes a traveler on horseback who visits an empty house deep in a dark forest at night. Upon arriving, he knocks on the door hoping for a response but hears only the sounds of nature, leaving him confused about who or what came knocking in response. The poem creates an atmosphere of mystery and leaves things open to the reader's imagination about what listeners may have heard the traveler's call.