Cap Blanc-Nez

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Cap Blanc Nez (before sunset).jpg
Cap Blanc Nez on a summer day.

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.

Cap Blanc-Nez was a vital measuring point for the eighteenth-century trigonometric survey linking the Paris Observatory with the Royal Greenwich Observatory. Sightings were made across the English Channel to Dover Castle and Fairlight Windmill on the South Downs; this Anglo-French Survey was led in England by General William Roy.

Some miles away to the southwest of Cap Blanc-Nez is the taller Cap Gris-Nez.

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Coordinates: 50°55′30″N 1°42′34″E / 50.92500°N 1.70944°E / 50.92500; 1.70944