i've been lucky enough to see a couple of spectacular displays in scotland, both quite different but equally beautiful. I nearly dismissed it the first, and most dramatic time because of a small amount of light pollution from street lights, but even a short distance away from the lights we realised that the night sky was filled with light, like a huge umbrella of shifting, cascading colours, it was quite amazing and unlike anything i had ever seen before, hard to describe and certainly unforgettable.