Hartmannswillerkopf is a pyramidal rocky spur in the Vosges mountains of the Grand Est region, France. The peak stands at 956 metres over mean sea level overlooking the Rhine valley. At Hartmannswillerkopf stands a national monument of World War I for the fighting which took place in the trenches here. The French and Germans fought for control of the mountain peak during the First World War. After about 11 months of combat, both sides began to focus most of their attention farther north on the Western Front. The lines remained relatively stable for the remainder of the war and generally only artillery exchanges took place.