The sunken narrow-gauge railway bridge in Lake Rosnowskie

In Rosnowskie Lake in Rosnowo near Koszalin, there is a narrow-gauge railway bridge from 1905 that was deliberately submerged.
The structure lies about one meter below the water’s surface and is marked by a red buoy.
The bridge ended up underwater during the construction of an artificial reservoir on the Radew River in Rosnowo in the early 1920s.