The Battle at the Harzhorn took place in the early 3rd century between Germanic and Roman troops near the Harzhorn hill between the towns of Kalefeld and Bad Gandersheim, in the state of Lower Saxony, Germany.
The battlefield, spanning several square kilometers, was discovered in December 2008 and is currently being excavated. Roman coinage found at the site gives a probable date of the battle during the reign of one of two Roman emperors: Severus Alexander or Maximinus Thrax.
Archaeologists view the battlefield as a spectacular discovery of extraordinary scientific importance. Along with the Kalkriese battlefield and the Roman camps of Bentumersiel and Hedemünden, this is one of the very few Roman archaeological sites in northern Germany.
Wikipedia https://en.wikipedia.org/wiki/Battle_at_the_Harzhorn
Address 37581, Germany
Coordinates 51°49'56.666" N 10°6'17.379" E