New on 500px : White Sands Sometimes Become Purple at Sunset by RobertBohrer by RobertBohrer

This was taken a few years ago at White Sands National Monument in the summer when wildfires were sweeping through the American southwest. Due to the particulate matter in the sky from the fires, the sunset was much redder than normal, and this had the effect of making the snow-white sand appear purple as the sun touched the horizon. via Tumblr