Wallberg (1722 m) lies in the Mangfall Mountains in the Bavarian Prealps [wikipedia]. It's one of the most famous mountains in Bavarian alps.
The starting point of the hike is the cable car station, from there it's normal forest road to the top of the cable car station. At the top of the cable car station, there is hut which provides foods and drinks. The summit is towards the north east direction from the hut.
In winter it's usually a good idea to ride on sledge to go down. The cable car station provides cheap sledge rental offers.