Parking lot of the Zwölferhorn cable car St. Gilgen at 567m or parking place at the "Laimerlift" at 611m.
Start from the car parks Zwölferhornseilbahn or Laimerlift - ascent via the ski slope - the trail is well signposted. There are some shortcuts (hiking trails and hollow paths) through which you can escape the piste partially.
After about an hour you will reach the Sausteigalm, where you can stop for a refreshment and enjoy a fantastic view over the Wolfgangsee.
Afterwards we go on - here are two options:
1. via the Elferstein, a side peak of the Zwölferhorn. The path goes through the forest and is relatively steep - hairpin bends should not be a foreign word.
2. continue along the piste.
After about two hours you reach the top of the Zwölferhorn, where you have a fantastic view over the lake region of the Salzkammergut and the Dachstein. Next to the cable car mountain station there is another stop for refreshments.
About the Elferstein or the front-slope of the Zwölferhorn, which is (fortunately) only rarely groomed. If you are going for fresh snow, you should start early in the morning, as the Zwölferhorn is a popular training mountain and therefore well visited in the early morning hours.
Another downhill variant is the Stubneralm - on the left hand side of the Franzlshütte the winter hiking trail leads past it - follow it until you see a wide chute on the right hand side - into this one you ride down and reach a forest path, which you follow out of the valley. At the end of the forest trail, you will return to the Sausteigalm with a 5-minute ascent (signposted), from where you can descend via the slopes. For this option you should absolutely check the avalanche situation.
ÖK 50 Blätter 65 (Mondsee) and 95 (St. Wolfgang im Salzkammergut)
In the map I have only marked the descent over the Stubneralm, because the ascent and the first downhill variants are very clearly noticeable.