“ The cave became a place of pilgrimage, and a fine church was built over the spot. Walpurgis is commemorated at various times, but principally on the 1st of May, her day taking the place of an earlier heathen festival which was characterized by various rites marking the beginning of summer. She is regarded as the protectress against magic arts (cf. the Walpurgis-Nacht dance in Goethe's Faust) . In art she is represented with a crozier, and bearing in her hand a flask of balsam.
Her life was written by the presbyter Wolfhard and dedicated to Erkenbald, bishop of Eichstatt (884–916) . ”