Devil's Dykes


The Devil's Dykes, also known as the Csörsz árka or the Limes Sarmatiae, are several lines of Roman fortifications built mostly during the reign of Constantine I, stretching between today's Hungary, Romania and Serbia.

History

The fortifications consisted of a series of defensive earthen ramparts-and-ditches surrounding the plain of the Tisia river. They stretched from Aquincum eastwards along the line of the northern Carpathian mountains to the vicinity of Debrecen, and then southwards to Viminacium.
They were probably designed to protect the Iazyges, a Sarmatian tribe that inhabited the Tisza plain and had been reduced to tributary status by Constantine, from incursions by the surrounding Goths and Gepids.
Some elements of the fortifications, however, date from the 2nd century AD, and probably constituted an earlier defensive line constructed under emperor Marcus Aurelius at the time of the Marcomannic Wars, the previous occasion that the Tisza plain was occupied by the Romans.
The "Limes Sarmatiae" was intended to expand the Roman Limes, and was built at the same time as the Constantine Wall in Wallachia. It was, however, destroyed after a few years, at the end of the 4th century.
Indeed, in 374 AD, the Quadi, a Germanic tribe in what is now Moravia and Slovakia, resenting the erection of Roman forts of the "Limes Sarmatiae" to the north and east of the Danube in what they considered to be their own territory, and further exasperated by the treacherous murder of their king, Gabinius, crossed the river and laid waste the province of Pannonia.
The emperor Valentinian I in 375 AD entered Pannonia with a powerful army and reinforced the fortifications of the "Limes Sarmatiae". But during an audience to an embassy from the Quadi at Brigetio on the Danube, Valentinian I suffered a burst blood vessel in the skull while angrily yelling at the people gathered. This injury resulted in his death on November of that year.
Soon after his death, and following a lack of ruling power inside the Roman Empire, the "Limes Sarmatiae" was destroyed.