When on the mainland in the countryside the rivers were wide and deep, trade took place along them. But as the years passed, the climate and terrain changed. The rivers became shallow, and some factories turned into lakes. From such places in the countryside, during the shallowing of the river, a sunken ship from the 13th century was discovered. Masts, old barrels of gunpowder and much more are visible. it is now a local landmark.
We go deep into the countryside to see history. Doesn't interfere with gameplay, but makes these places more interesting.