If you want to ski down the mountainside, you'll need to reach the top of it first. Jump on Schoentauf 1 Ski Lift and enjoy the ride up.
When you've spent some time at this mountainside transportation system in Stelvio, why not make your way to Seilbahn Sulden Ski Area, and Lake Gioveretto? They're near Schoentauf 1 Ski Lift and also a hit with many travelers.