This past weekend, a friend and I made a trip to Lynchburg, Virginia, home of Liberty University. We did not go for the education, rather the Snowflex complex they have built atop a mountain facing the campus. It is the only facility in the US.
Snowflex is a snow alternative. It is basically one big, white, wet hairbrush you slide down. The sensation of riding snowflex is impossible to describe, but I can say that it is very fun, and very unpleasant to fall on.
Given the regional climate of VA, Snowflex is a great option. I will be going back very soon.