Written sources about the castle have not survived. The complex, which has been known by the nickname "Heidenschuh" since the 18th century, dates back to the 9th/10th century and probably served as a refuge for the inhabitants of Klingenmünster Abbey and the surrounding area. The counts of Speyergau may have initiated the construction of the castle. (Jens Friedhoff)
There is a lack of reliable information on the structural development of the complex and when it was abandoned. (Jens Friedhoff)
The 230 metre long fortification is up to 90 metres wide. On the attack side in the west there are two section walls, the outer one of which is 90 metres long and up to 1.20 metres high. The building material was rough-hewn or unworked stone. There is no mortar bond. The ditches in front of the section walls formed an additional obstacle. Remains of an interior building have not yet been found. (Dieter Barz and Jens Friedhoff)