<Tr> <Th> Communes </Th> <Td> 520 </Td> </Tr> <Tr> <Td_colspan="2"> ^ 1 French Land Register data, which exclude estuaries, and lakes, ponds, and glaciers larger than 1 km </Td> </Tr> <P> Dordogne (French pronunciation: ​ (dɔʁdɔɲ); Occitan: Dordonha) is a department in southwestern France, with its prefecture in Périgueux . The department is located in the region of Nouvelle - Aquitaine between the Loire Valley and the Pyrenees, and is named after the great Dordogne river that runs through it . It roughly corresponds with the ancient county of Périgord . </P> <Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (May 2013) (Learn how and when to remove this template message) </Td> </Tr> </Table>

What region of france is the dordogne in