The big freeze that hit central and eastern Europe is starting to ease, bringing more problems for the region.
Vast blocks of ice on the River Danube in Serbia have broken away, crushing and sinking dozens of boats, pontoons and floating restaurants.
The temperature has risen from minus 20 last week to around 10 degrees Celsius.
"We are trying to save what can be saved, about 20 to 30 boats disappeared out of 100 moored. We have to see where the rest of them ended up," boat owner Mihajlo Svilkaric said.