But rather than finding ancient treasures and weaponry, the archaeologists were greeted with a great deal of rubbish.
The bottom of the lake was littered with bottles, cans, coins and metal rods – likely from a nearby quarry.
And at the centre of Hammerso, they uncovered a modern-day bathtub, which they initially confused for a dugout canoe.
Professor Kontny: “At first we thought it was a dugout, which is a boat made out of one tree trunk.
“We were, therefore, counting on interesting finds from at least several hundred years ago.
source: express.co.uk