If you want to ski down the mountain, you'll need to make your way to the top of it first. Jump on Schwarzkopfbahn and enjoy the ride up.
You'll have no end of sightseeing choices when staying in Flattach. Schwarzkopfbahn is an ideal place to begin here, but there are lots of other interesting sights to experience. Sportgastein Ski Resort, Molltaler Gletscher, and Gastein Heilstollen Radon Gallery are not far from the mountainside transportation system and and will cap off your day nicely.