WALBRZYCH, Poland — Two treasure hunters who were hoping to find a buried Nazi train full of gold, jewels and weapons halted their efforts on Wednesday, after a week of digging turned up no sign of the train.

The excavation began last week outside the town of Walbrzych, Poland, in an area that was part of Germany before World War II. The dig became the subject of intense interest after the treasure hunters claimed last year that they had found what appeared to be a buried rail tunnel that might contain such a train.

According to local lore, the train vanished after it entered a complex of secret tunnels carved by the Germans into the Owl Mountains as they fled the advancing Soviet Army in 1945. But skeptics have said there was no hard evidence to corroborate the story, and the digging near Walbrzych did not change that.

“Unfortunately, the excavation has revealed no train, no tunnel and no trackway in the location where we thought they would be,” Andrzej Gaik, a spokesman for the project, said Wednesday in a telephone interview.