Cap Blanc-Nez (French pronunciation:[kapblɑ̃ne], literally "Cape White Nose" in English; from Dutch Blankenesse, white headland) is a cape on the Côte d'Opale, in the Pas-de-Calaisdépartement, in northern France, culminating at 134 m. The cliffs of chalk are very similar to the white cliffs of Dover on 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.