pretty good--for the midwest. terrainwise- obviously not even in the same league as anything in the rockies nor can i imagine better than much in the northeast but with similar conditions. it can get a little icy but this is a pretty solid place to ride if you are reading this sitting within 150 miles of it. they really do their best to keep the hardpack in shape and can get some fresh on occation.
on the plus side--actually a progressive park setup; ive seen a new park design almost every time i go there (about once a year to get the rust off). suprisingly, ATHs has a run(s) that require an advanced skier/snowboarder to make a few turns which truly is rather unussual for anything i have seen in MN/ND/SD besides lutsen and a maybe a few others. definately the best place within 100 miles of Lake Agassiz- (sorry walhalla, bemidji, bears den, even afton). overall good job ATH, keep it up
if your reading this from CO, MT, UT, etc etc-yes it can be worse then this...have pity