We skiied Gausdal along with Hafjell and Kvitfjell as part of a long weekend in Lillihammer at the end of March, in Norway, when the Alps were turning to slush.
Gausdal is higher than the other two and above the tree line and consequently has better late season snow. The conditions were great when we were there.
Front side of the mountain is served by an 8 man high speed weather proofed chair serving a number of really nice blue, red and black (but really dark red) runs that you can do a lot of fast skiing on; the back side is all T-bar lifts and is slightly hard work. But the compensation is the view across to Oppland and the completely empty country in between and the empty pistes. If you have a car and have a few days in the area it's worth a visit.