Video clip
NVA's Speed of Light was a specially commissioned project that took place at the Edinburgh International Festival in 2012.
Also part of the London 2012 cultural olympiad the event involved hundreds of runners in light-emitting clothing jogging through the night on Holyrood Park.
The Fireworks that you see exploding part way through the video are from the Edinburgh Military Tattoo taking place at Edinburgh Castle.
Read the Speed of Light Review