Langdon Beck is situated in Upper Teesdale. While Teesdale is now part of County Durham, historically it was part of the North Riding of Yorkshire and is still described as the most northern of the Yorkshire Dales. The local climate is scientifically classified as "Sub-Arctic" and snow has sometimes fallen on Cross Fell, the highest hill in the Pennines, into June. Due to its climate and shallow soil Teesdale boosts several rare post-glacial Arctic / Alpine plants, known to naturalists as the "Teesdale Assemblage". The long walkers will get to see a very impressive waterfall!