Wooden structure precursor of Hadrian's Wall

According to archaeologist Geoff Carter, the stone structure of Hadrian's Wall may not have been the first to cross northern England. Carter believes a wooden wall, spanning 117 km, was built first.

"For some time now, archaeologists have known about three mysterious lines of postholes running in front of Hadrian's Wall. I demonstrate that these thousands of post holes, six posts every 4ft, are the foundation of massive timber ramparts 10ft wide, about 20ft tall, and quite probably stretching all 117 km from coast to coast," Carter said.

The theory also explains why a ditch runs parallel to the wall, curving inwards toward the milecastles. Carter's report is published on his website.