Taken in my back yard. Although this photo shows a fairly bright sky just after sunset, it was actually very dark to the point you could barely make out the outline of the treeline. I noticed a slight orange glow, and decided to try a long exposure just to see what it what look like. I used a 30 second exposure, and was shocked at the resulting effect. The long exposure time also gave the clouds a motion blur that contrasts well with the sharper treeline. The only editing done was a slight contrast increase, and stretching the image slightly to give it a panoramic effect.