Has the Amber Room, the 18th-century chamber decoration the Nazis stole from the Soviet Union in World War II, finally been found? German treasure hunters say they may have solved the decades-old mystery.

Treasure hunters in Germany claim they have found hidden gold in an underground cavern that they are almost certain contains the Amber Room treasure, believed by some to have been stashed away by the Nazis in a secret mission in the dying days of World War II.

The discovery of an estimated two tonnes of gold was made at the weekend when electromagnetic pulse measurements located the man-made cavern 20 meters underground near the village of Deutschneudorf on Germany's border with the Czech Republic.