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 detail precising their role, tasks, specific responsibilities, moreover meeting sessions, term of office, contact informations etc. A list of functions of the World Heritage Committee in cooperation with the States Parties is provided. Most functions derives from Articles 11(2+4+7), Article 13(6), Article 21(1+3) and Article 29(3) of the World Heritage Convention. In general the overall aim of the Convention and its Guidelines is to safeguard heritage of universal value for future generations. It is to give a guidance on how properties can be inscribed on the World Heritage List or/and the List of World Heritage in Danger if the properties