The Howgill Fells project began in June 1992 as an extension to the Yorkshire Dales NMP project, in order to complete the archaeological mapping of the whole area of the Yorkshire Dales National Park. The full extent of the fifteen Ordnance Survey map sheets, which included the National Park in Cumbria, was covered by the project. The mapping was carried out at 1:10,560 scale, and to the same standards as the Yorkshire Dales Project.