By Madeline Chambers
BERLIN (Reuters) - A pensioner has started digging in Germany's western Ruhr region for the Amber Room, a priceless work of art looted by Nazis from the Soviet Union during World War Two and missing for 70 years, but says he needs a new drill to help him.
Dubbed the Eighth Wonder of the World, the Amber Room was an ornate chamber made of amber panels given to Czar Peter the Great by Prussia's Friedrich Wilhelm I in 1716.
German troops stole the treasure chamber from a palace near St Petersburg in 1941 and took it to Koenigsberg, now the Russian enclave of Kaliningrad, before it disappeared.
Conspiracy theories abound about the whereabouts of what some say is the world's most valuable piece of lost art. Some historians think it was destroyed in the war, others say Germans smuggled it to safety.
Now 68-year-old pensioner Karl-Heinz Kleine says he thinks the chamber is hidden under the town of Wuppertal, deep in western Germany's industrial Ruhr area.
After analyzing the evidence, Kleine has concluded that Erich Koch, who was the Nazis' chief administrator in East Prussia, may have secretly dispatched it to his home town.
"Wuppertal has a large number of tunnels and bunkers which have not yet been searched for the Amber Room. We have started looking in possible hiding places here," Kleine said.
"But the search is very costly. We need helpers, special equipment and money," Kleine told Reuters, adding that a building firm which had lent him a drill had asked for it back.
"I only have a small pension, a new machine is too expensive for me. But whoever helps will get his share of the Amber Room when we find it," he told Reuters.
"I am optimistic. I just need the tools, then it could go quickly," he said.
Even Communist East Germany's loathed Stasi secret police tried and failed to find the Amber Room. Hobby treasure hunters have launched expensive searches for it across Germany, from lake bottoms to mines in the eastern Ore Mountains. But in vain.
Historians say Erich Koch, convicted of war crimes by a Polish court, amassed a hoard of looted art and had it transported west from Koenigsberg in the final months of the war as the Soviet forces drew closer.
Russian craftsmen, helped by German funds, have recreated a replica of the Amber Room at the Catherine Palace from where the original was stolen.
(Reporting by Madeline Chambers; Editing by Stephen Brown and Gareth Jones)