They found the remains of wooden structures beneath a collapsed pile of stones that provided evidence of technologically advanced production methods.
“The wood material was surprisingly well preserved,” says Stenvik.
One eye-popper was a split log that could have been used as a shaft in a drive gear that would enable its makers to capture the power of the rushing river.
The shaft was inlaid with some sort of hinge that could have been attached to a pair of bellows.
Story: Asle Rønning | Photo: Project Gutenberg