Part of what we love most about skiing is breathing in the crisp winter air, taking in the scenery and enjoying a day outside in the mountains. But, in locations where the climate is uncooperative (e.g. the desert), or the topography leaves something to be desired (i.e. it's flat as all get out), or if you simply don't like being exposed to the elements -- there are still ways you can get your skiing fix, indoors.
These five slopes aside, a few big indoor ski park projects are possibly in the works in the continental United States. Las Vegas's "Wet" theme park was slated to have a snow component and billion-dollar indoor ski resorts were proposed pre-recession in New Jersey, Georgia and North Carolina.