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 friary, a chapel dedicated to Saint Boniface, and a large free-standing cross.