White Cliffs of Dover.

The White Cliffs of Dover are cliffs in Dover, England, that are famous for their striking white color. The white cliffs are made up of chalk that formed from the remains of the algae that died and built up enormous layers over millions of years. The white cliffs are also famous because Dover is only twenty-one miles from France, and the cliffs have been an important defensive location in England, giving the country a location to build up military forces to repel possible attacks. In modern times, the cliffs are the site of a great deal of commercial trade, with a great deal of shipping taking place in the area. The cliffs are also an important tourist attraction.