This is a single exposure, taken at 11:28 PM at the North Pasture, Stoddard, NH. Camera settings were f/4.0 @ 30 seconds, ISO 800. This scene was side-lit by the moon and although my eyes had difficulty perceiving any shadow detail, the combination of long exposure, high ISO and moonlight was enough to bring it out. I opened shadows further in post process, applied a curves adjustment and a soft-light overlay to enhance the image. The light on the horizon I believe is due to light pollution reflecting off the cloud bank and was not visible or apparent to the naked eye, another likely result of the long exposure time.