walking along the pennine journey between halton gill to birks fell in littondale in the yorkshire dales

birks fell tarn horse head moor marilyn old norse arncliffe birk bolton abbey clouds countryside dales way dry stone wall farmland foxup halton gill hiking landscape litton littondale national park nature north blue sky nuttalls penyghent pennine journey ribblesdale river wharf sheep skipton village walking wharfedale yockenthwaite york yorkshire