we took part in speed of light at edinburgh festival. it was a night walk of 3 hours up to arthur's seat in holyrood park overlooking edinburgh with walking sticks that had a a light at the bottom end to help you walk and a gizmo that emitted ambient sounds at particular altitudes. groups of runners in suits with lights on them ran across the adjacent hill to the walkers, creating a mesmerising effect. whilst it was called speed of light it was actually a slow meditative experience raher than a fast one. it was designed and put together by NVA. if you are in edinburgh book yourself in. clearly a challenge to photograph so i took up a tripod and grabbed a few 10 second or so exposures which look rather beautiful in their own way. this is the base of walkers light sticks (sabres?!) as they walk past. this is a moment at the top to pause and look over edinburgh and this gives a sense of the light sticks. 

if you want to see a much more amazing set of images than mine (!) this slideshow at the guardian is brilliant…