Tomasz Smolarz, governor of Lower Silesia, said the aim of the work in the town of Walbrzych is to exclude any danger for residents. He said experts will continue technical checks until Saturday.
The military’s efforts come after two explorers claimed to have found a Nazi train trapped in a tunnel that they say could contain both armaments and precious minerals.
The claim is awaiting confirmation, but has sparked hopes it could be a Nazi train laden with treasure that local legend says went missing at the end of the war.
The train was reportedly booby-trapped with weapons.
During the Second World War, Walbrzych was part of Germany.
Called Waldenburg, it was in an area where Adolf Hitler was building a system of secret underground tunnels.
The legend says the so-called “gold train” entered one of the tunnels while fleeing the Soviet army in 1945 and was never seen again.
Though there’s no evidence the Nazi train even existed, news of the possible discovery has sparked global fascination and a gold rush.