What is "haervejen"

Hærvejen ( Danish, literally: the army road, , literally: oxen way, , literally: oxen path), sometimes referred to in English as the Ox Road, is the name given to an ancient trackway in Denmark and Schleswig-Holstein. The route runs from Viborg via Flensburg to Hamburg, the territory of which it entered at Ochsenzoll ("oxen toll", "toll" in the meaning of "customs") and where it connected with other roads. It has been known by several other names throughout history, most importantly "the Cattle Road" (Studevejen) and "the Oxen Road" or "Ox Road" (Oksevejen / Ochsenweg).