Geography of Dorset is the Blackmore Vale, a relatively low-lying area of clays and limestones of Jurassic age. The south-east of the county forms part of the Hampshire Basin, an asymmetric syncline covered in sands and gravels of Paleogene age. The main rivers in the county are the Stour, Frome and Piddle. The Stour is the county's largest river, although its source is in the neighbouring county of Wiltshire. The Frome and Piddle both lie wholly within the county. The whole of Dorset's coastline is designated part of the Jurassic Coast World Heritage Site, and contains examples of many different coastal landforms, reflecting
Operational Guidelines for the Implementation of the World Heritage Convention OUV. (paragraph 154-157) If the decision is not to inscribe, the property may not be presented again. When additional information is needed the nomination will be referred (para 159) or deferred (para 160) for more in depth assessment or study. The Guidelines also reveal when conditions for deletion (Chapter IV.C ) of a World Heritage Site apply. e.g. Dresden Elbe Valley, and what steps are to be taken to ensure for the long-term protection and conservation of UNESCO sites. To make sure that a World Heritage Site is protected and transmitted to future generations, the Operational Guidelines give directions to