from Reuters news agency:
Archaeologists have discovered what they say is one of Britain's largest
prehistoric hill forts on the edge of the North York Moors in North
Yorkshire, English Heritage has said.
The 40-acre site, located at Sutton Bank, is believed to date back to 400
BC. Archaeologists using satellites mapped a series of ancient ditches,
bank, humps and other feaures extending much further than originally
"Hill forts are uncommon in Yorkshire, so we were obviously shocked to
discover such a hugh complex," said Alastair Oswald, English Heritage
Archaelological field investigator.
"Over the years there have been tantalising clues that such a monument
existed, but no one had done a comprehensive survey to settle the question."
Oswald said the fort was possibly constructed as a show of power rather than
as a defensive bastion.
"We didn't find much evidence of settlement within its boundaries, but it
may be a temporary refuge in times of trouble, or a giant corral for
livestock," he said.
The survey revealed that the fort was enclosed by a two metre deep trench
and a four metre high box rampart, fronted by a timber palisade and topped
by a defended walkway.