This is an add-on airport for Microsoft Flight Simulator X based upon a small airfield near to my old hometown of Derby, England. It comprises satellite imagery and hand-placed static objects.
To install, place the “Addon Scenery” folder into your FSX folder (e.g. C:\Program Files (x86)\Steam\Steam Apps\Common\FSX\). If the airport does not show up in FSX then you may need to change the scenery priority. In FSX, go to Settings -> Scenery Library, and move “Addon scenery” to the top spot.