![white cliffs of dover cover white cliffs of dover cover](http://www.sharonwu.co/wp-content/uploads/2016/10/edited-8939.jpg)
Composed of chalk streaked with black flint, the cliffs reach a height of 110 meters (350 feet) in places. The famed White Cliffs of Dover stand guard over the narrowest stretch of the English Channel facing the continent of Europe.
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Note that the wonder tiles can be incorporated into National Parks - if a player wishes to found a Park, then it is often wise to incorporate as many wonder tiles as possible within a city. An important caveat however is the Māori Their Marae will affect any passable natural wonder, including the Cliffs, meaning these tiles will receive extra culture, faith and - later in the game -, tourism. In general, passable wonder tiles are significantly better than an unimproved tile of any kind, but are often less productive than an ordinary tile with an improvement or a district. Because of this, the Cliffs may be more of a hindrance than an asset later in the game, even more so than the various mountain and water-centric wonders! A natural wonder in the heart of a City can spoil adjacency bonuses for Farms and districts. Unfortunately, as with all natural wonders, the Cliffs of Dover tiles cannot be developed or improved, except by the use of a Preserve. (The coast tiles are not part of the wonder.) Since Culture is often hard to generate early in the game, incorporating natural wonder tiles can provide a vital head start through the Civics tree. The Cliffs of Dover wonder is made up of two land tiles, each with a yield of 3 Culture, 3 Gold, and 2 Food.