The lower reaches of Airedale and Wharfedale are not usually included in the area, and Calderdale, south of Airedale and in the South Pennines, is not often considered part of the Dales even though it is a dale, is in Yorkshire, and its upper reaches are as scenic and rural as many further north. Additionally, although the National Park includes the Howgill Fells and Orton Fells, they are not usually considered part of the Dales.