Great Dun Fell, Cumbria (6. Swindale beck)
Royal Geographical Society

Koordináták
Did you know that this is Britain’s only named wind? The Helm Wind is an example of a ‘Foehn’ type wind, one that is typically dry and that acts down slope in the lee or downwind side of a mountain range. During an occurrence of the Helm Wind, a heavy bank of cloud (the ‘Helm’ or ‘Helm Cloud’) rests along the Crossfell Range. Meanwhile, three or four miles from the foot of the fells, a cigar-shaped, fierce, rolling cloud (known as the ‘Helm Bar’) forms. A strong, cold wind blows down the steep slope until it reaches the ‘Bar’ and suddenly ceases. Clear sky usually separates the two cloud banks. The Helm is a true ‘local’ wind, because it is a product of the particular landscape and climatic conditions found here at Crossfell. The name Helm probably comes from an Anglo-Saxon word for helmet because of the distinctive cloud formation that covers the summit whilst the wind blows. The Helm Wind is both feared and celebrated by locals. If you think you can see this cloud forming now, it may be wise to descend! Directions to stop 7 Cross the footbridge and follow the footpath up the hillside ahead to the information board which tells you more about Moor House-UpperTeesdale National Nature Reserve. Continue uphill, following the Pennine Way for about 750 metres, which is marked by yellow arrows to help you stay on the path. Stop when you reach a double cairn (pile of stones).
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