Scottish "wall" built fifty years before Hadrian's

BBC History Magazine reports that archaeologists have identified a first century Roman defense system that extended 120 miles across Scotland. The series of forts, watchtowers and defensive ditches predates Hadrian's Wall by 50 years, and the Antonine Wall by 20. (photos and map)

The wall is believed to have run from Montrose or Stonehaven, south of Aberdeen, on the North Sea coast to the Firth or Clyde. The archaeological team has studied the network of forts for the past five years and believes that the forts may have included cavalry units. The defenses may have been constructed due to increased tensions with the northern Caledonian tribes.