Site of Concavata at Drumburgh. The fortified farmhouse of Drumburgh Castle is built with Roman wall stones.
|Alternative name(s)||Congavata, Concavata|
|Known also as||Drumburgh|
Coggabata, or Congavata / Concavata, (with the modern name of Drumburgh) was a Roman fort on Hadrian's Wall, between Aballava (Burgh by Sands) to the east and Mais (Bowness on Solway) to the west. It was built on a hill commanding views over the flatter land to the east and west and to the shore of the Solway Firth to the north. Its purpose was to guard the southern end of two important Solway fords, the Stonewath and the Sandwath.
The fort was an oblong and built of stone, with the Wall running along its northern side, and measured 270 feet (82 m) north to south by 316 feet (96 m) east to west, occupying an area of just less than 2 acres (8,100 m2). The Wall at this point is nine feet seven inches wide, and is made of stone. It was constructed on the foundations of the levelled Turf Wall. There were gates on each side, with the north gate giving access beyond the wall.
There is a manor house, Drumburgh Castle, lying across the line of the north wall of the fort, built entirely of Roman stones.
The site was excavated in 1899, when the stone fort was revealed. A buttressed granary was found within the north-west angle of the fort.
Excavations in 1947 revealed that the stone fort was built within a slightly larger fort with levelled clay ramparts. It is presumed that the earthwork fort had been added to the turf Wall, and that the stone fort replaced it when the turf Wall was re-built in stone. This would date the stone fort at about 160 A.D.
No sign of a vicus has yet been detected near to the fort.
- J. Collingwood Bruce, Roman Wall (1863), Harold Hill & Son, ISBN 0-900463-32-5
- Frank Graham, The Roman Wall, Comprehensive History and Guide (1979), Frank Graham, ISBN 0-85983-140-X
- Concavata at www.Roman-Britain.org
- iRomans website showing Coggabata objects in the Tullie House Museum collection