Each autumn and spring one can see an exciting phenomenon here, as the fish try to clear the rapid by jumping over it. About 300 years ago, Jacob, the Duke of Courland, invented a way to catch with baskets placed along the rapid the fish that came upstream to breed and jumped across the rapid. Due to these fishing devices invented by Duke Jacob, Kuldīga used to be called to be a town where you can catch salmon in the air. One could catch as many as 80—100 salmon a day.
