Wikipedia
The Hülfensberg (called Stuffenberg in the Middle Ages) is a 448 m high, heavily wooded mountain in the Geismar municipality in the Eichsfeld district, Thuringia, Germany. The mountain has been a pilgrimage site since the late Middle Ages, and on its summit are a church containing a 12th-century crucifix, a Franciscan monastery, a chapel dedicated to Saint Boniface, and a large free-standing cross.
The medieval name for the mountain was Stuffenberg, from which the supposed Germanic god Stuffo derives his name. According to some sources the name was changed in the 14th century (or around 1400) because of a famous crucifix in the church, the Hülfenskreuz; another etymology for the modern name was given in 1575, based on the legend that Boniface had defeated an army of unbelievers on the mountain, which was subsequently named Hülfensberg (helfen: to help) in reference to divine help.