Zellerrain Pass (elevation 1,125 m, 3,691 ft) is a mountain pass in the Ybbstal Alps, located on border between Lower Austria and Styria, west of Mariazell. The pass road has a steep grade of up to 22 percent. The river Ybbs has its source at the pass. See also List of highest paved roads in Europe List of mountain passes Mountain passes of Styria Mountain passes of the Alps