Richter and Koper have been accused of faking evidence of the gold train

A Polish newspaper claims a two km long tunnel near to the site where the alleged Nazi 'gold train' is said to lie buried has been discovered.

The report in the Gazeta Wroclawska on Tuesday evening says it understands that the two men who allegedly found the original tunnel with radar reported the latest discovery to authorities.

The report in the newspaper said the tunnel is near the village of Walim, 12 miles from Walbrzych where the hunt has been centred.

Hoax? Experts have urged caution over claims from Piotr Koper and Andreas Liechter that a Nazi gold train has been found in Poland, but the pair now say they have found a hidden tunnel near the site

'To our knowledge, the tunnel was discovered by the same two men who claimed to have found the 'gold train,' said the report. It said using a 1926 railway map, they found that the tunnel lies near to the former railway station in Walim.

The news has rekindled Klondike fever in and around Walbrzych. And in shops in the town a new product has gone on sale – bars of chocolate for 75 pence marketed as 'gold bars from the armored train.'

They nestle side by side with T-shirts, mugs and plates bearing the symbol of a train steaming Indiana Jones-style out of a tunnel with a blazing gold halo all around.

Gold mania was triggered on the continent a fortnight ago when two men, German Andreas Richter and Pole Piotr Koper, claimed to have underground radar shots of the buried train which they claimed was heading to Nazi Germany in 1945 with a fortune in plunder aboard when it was buried as the Red Army moved in.

Evidence: Treasure hunters have shown MailOnline a series of items they claim were discovered around the site where the gold train is supposedly hidden - including this Nazi Eagle

Haul: They say coins like these could be just a fraction of what is hidden in the tunnel

The lure of massive wealth sitting under the earth triggered an invasion of amateur treasure hunters who swarmed into the region.

But the fever subsided after experts said it is probably all a hoax. In particular they decried the radar graphic the men provided to support their claim.

'In no way does this alleged radar shot show what is in these cavities underground,'said Tomasz Herbich, archaeologist at the Polish Academy of Sciences in Warsaw.

Prof. Dr Hossein Tudeshki from the Institute of Mining of the Technical University of Clausthal also could not rule out a fake, stating: 'In an extreme case the image may be a cheap computer animation.

'It is not of the current state of technology and research. In this respect it is with absolute caution that people should treat this image.'

Tomasz Samsudin, head of the district government, added: 'We cannot say for sure that the so-called golden train i located in the vicinity of Walbrzych.'