Porte des Morts, also known as Porte des Mortes, the Door of Death, and Death's Door is a strait linking Lake Michigan and Green Bay between the northern tip of the Door Peninsula and the southernmost of the Potawatomi Islands. At its narrowest reach between Plum Island and the peninsula, the Porte des Morts Passage is about one and one third miles across.[1] The name is French and means "door of the dead".
- ^ North End of Lake Michigan, Including Green Bay NOAA Chart 14902, by NOAA's Office of Coast Survey, page 12