A two-mile stretch of land between Arrochar and Tarbet could hold vital clues to the Vikings' occupation of Scotland.
The fierce Norsemen are said to have dragged their boats across the isthmus - now the route of the busy A83 - to raid the rich Lomond settlements before encountering defeat at the Battle of Largs in 1263.
Now an appeal has gone out for volunteers to come forward and help archaeologists in their quest for Viking clues.
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