The wrecks of explosives-laden Nazi ships sunk in the Danube River during World War II have emerged near Serbia’s river port town of Prahovo, after a drought in July and August that saw the river’s water level drop.

No ships are allowed to sail on the Austrian section of the River Danube until further notice following a prolonged period of heavy rainfall, the Ministry for Climate Protection and Mobility announced in Vienna on Tuesday.

World War II-era vessels once operated by the Kriegsmarine have “risen” from the depths of the Danube, in Serbia. The wrecks, which belonged to Germany’s Black Sea Fleet, have surfaced as a result of a months-long drought that’s caused the river’s water levels to recede.

The Danube River was closed to all shipping traffic in Austria on Tuesday due to severe flooding, according to APA news agency,

By Krisztina Fenyo and Fedja Grulovic MOHACS, Hungary/PRAHOVO, Serbia (Reuters) - The wrecks of explosives-laden Nazi ships sunk in the River Danube during World War Two have emerged near Serbia's river port town of Prahovo,