Devil's Dykes

The Devil's Dykes (Hungarian: Ördög árok), also known as the Csörsz árka ("Csörsz Ditch") or the Limes Sarmatiae (Latin for "Sarmatian border"), are several lines of Roman fortifications built mostly during the reign of Constantine I (312–337), stretching between today's Hungary, Romania and Serbia.

The "Limes Sarmatiae", "Devil's Dyke" or "Devil's Ditch" in eastern Pannonian plain, a group of lines of Roman fortifications done by Constantine I