Cap Blanc-Nez (literally "Cape White Nose" in English; from Dutch Blankenesse, white headland) is a cape on the Côte d'Opale, in the Pas-de-Calais département, in northern France. The cliffs of chalk are very similar to the white cliffs of Dover at the other side of the Channel in England. Cap Blanc-Nez does not protrude into the sea like a typical cape, but is a high point where a chalk ridge has been truncated by the sea, forming a cliff that is topped by the obelisk of the Dover Patrol Monument, commemorating the Dover Patrol which kept the Channel free from U-boats during World War I.