 The road climbing to the summit is now wide and straight but until the late 1960s included two notorious hair-pin bends with a 1 in 3 (33%) gradient known as the Devil's Elbow.One of the most spectacular roads in Scotland, this was a favourite subject for postcards.It was so steep that at the bottom buses unloaded passengers who had to walk to the top and until it was rebuilt the AA maintained a well in a layby for overheating engines.