The first thing that hit one on entering the holodeck was the smell of fresh air, grass and trees - in short, spring. There was a light breeze in the air, though the sun was warm, and there was even the gentle sound of birdsong off in the distance. Off to the right was an inviting looking evergreen wood with spires of long, straight pines, the distinctive brown, needle-cushioned floor of a coniferous forest, and shafts of light filtering between the wide-spaced trees. Off to the left was a picturesque little stableblock, apparently standing all alone in the middle of nowhere. Off in front were rolling hills as far as the eye could see and, galloping at speed along one of the nearer hillsides, a well-seated rider on a black horse.