A huge World War II unexploded bomb was one of two successfully defused on Sunday by German experts after the pair were discovered on the riverbed of the Rhine.
The larger of the bombs weighed 1.8 tonnes and was the most powerful yet to be found in the country.
Its discovery came to light after water levels fell due to a dry spell.
Nearly half the population of the city of Koblenz -some 45,000 people in all – were evacuated as a precaution before the bomb disposal team got to work.
The operation took hours to organise – sports halls were prepared to accommodate the evacuees.
Germany is littered with unexploded US and British bombs dropped by the Allies between 1943 and 1945. The aim had been to cripple German industry. Most of the old city of Koblenz was destroyed.