Divers from the Mission Mjøsa project had discovered a well-preserved shipwreck in Norway's Lake Mjøsa. Researchers believed the ship was a 'føringsbåt,' and estimated to be 700 years old.

For over 30 years, starting in the 1940s, hundreds of tons of surplus ammunition was dumped into Lake Mjøsa, Norway's largest lake. In 2022, a military vessel used an autonomous underwater ...