Castra Martis was a Roman fortress (castra

Castra

The Latin word castra, with its singular castrum, was used by the ancient Romans to mean buildings or plots of land reserved to or constructed for use as a military defensive position. The word appears in both Oscan and Umbrian as well as in Latin. It may have descended from Indo-European to Italic...

) in the Roman province of Dacia ripensis

Dacia Ripensis

Dacia Ripensis was the name of a Roman province first established by Aurelian circa 283 AD, south of the Danube River, after he withdrew from Dacia Traiana.-History:...

 on the modern site of Kula

Kula, Bulgaria

Kula is a town in northwestern Bulgaria. It is the administrative centre of Kula Municipality part of Vidin Province. Located just east of the Serbian-Bulgarian border, it is the third largest town in the province after Vidin and Belogradchik. Kula lies 30 kilometres west of Vidin and 13...

, in Vidin Province

Vidin Province

Vidin Province is the northwesternmost province of Bulgaria. It borders Serbia to the west and Romania to the northeast. Its administrative centre is the city of Vidin on the Danube river. The area is divided into 11 municipalities...

 in Bulgaria

Bulgaria

Bulgaria , officially the Republic of Bulgaria , is a parliamentary democracy within a unitary constitutional republic in Southeast Europe. The country borders Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, as well as the Black Sea to the east...

. It used to protect the road through Vrashka Chuka

Vrashka Chuka

Vrashka Chuka or Vrška čuka is a peak in the Balkan Mountains, situated on the border between Bulgaria and Serbia. The peak is high. Vrashka Chuka is the most northwestern peak in the Balkan mountains and part of Babin Nos mountain. Vrashka Chuka Pass is located to the north of the peak. There...

 pass in the western Balkan mountains

Balkan Mountains

The Balkan mountain range is a mountain range in the eastern part of the Balkan Peninsula. The Balkan range runs 560 km from the Vrashka Chuka Peak on the border between Bulgaria and eastern Serbia eastward through central Bulgaria to Cape Emine on the Black Sea...

.

In 408

408

Year 408 was a leap year starting on Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Bassus and Philippus...

, the Huns

Huns

The Huns were a group of nomadic people who, appearing from east of the Volga River, migrated into Europe c. AD 370 and established the vast Hunnic Empire there. Since de Guignes linked them with the Xiongnu, who had been northern neighbours of China 300 years prior to the emergence of the Huns,...

 under Uldin

Uldin

Uldin or Uldes was one of the primary chieftains of the Huns located beyond the Danube during the reigns of the Eastern Roman Emperors Arcadius and Theodosius II...

 took control of the site during an attack on the Eastern Roman Empire, apparently by treachery.

Castra Martis Hill

Castra Martis Hill

Castra Martis Hill is a 453 m hill near Leslie Hill in Livingston Island. The peak was named after the Roman settlement of Castra Martis, ancestor of the present town of Kula in Northwestern Bulgaria....

 on Livingston Island, in the South Shetland Islands

South Shetland Islands

The South Shetland Islands are a group of Antarctic islands, lying about north of the Antarctic Peninsula, with a total area of . By the Antarctic Treaty of 1959, the Islands' sovereignty is neither recognized nor disputed by the signatories and they are free for use by any signatory for...

, West Antarctica

West Antarctica

West Antarctica, or Lesser Antarctica, one of the two major regions of Antarctica, is the part of the continent that lies within the Western Hemisphere including the Antarctic Peninsula.-Location and description:...

, is named after it.