Treasure-hunters said on Wednesday they were optimistic they would find a Nazi-era train believed to be hidden underground in southern Poland as they launched a second day of excavations.
According to folklore, the train - dubbed by Polish media the “gold train” because it was carrying jewels and guns looted by the Nazis ahead of advancing Soviet forces - was buried in a tunnel in the lower Silesia region in 1945.
Piotr Koper and Andreas Richter said last year they had located a train buried in an embankment near railway tracks connecting the cities of Walbrzych and Wroclaw.
A team of Polish scientists later expressed doubts about whether a train was there. Koper and Richter decided to excavate the embankment at several points.
Two excavations made on Tuesday have been terminated after reaching solid rock with no sign of a tunnel, but a third dig on Wednesday revealed material put in the embankment by human hand, said Christel Focken, spokeswoman for the project.