WARSAW, Poland — Polish geology experts said Tuesday they have found no traces of a train at a site allegedly hiding a World War II Nazi train.

Experts from the University of Science and Technology in Krakow examined the site in Walbrzych, in southwestern Poland, last month using magnetic and gravitation equipment. But the head of the team, Janusz Madej, said “according to our examination, there might be a tunnel there but there is no train there.”

The conclusion concerns only one of a number of sites in the Walbrzych area, where explorers claim war-time installations and even a train may be found. During the war, the Nazis built a system of underground tunnels in the mountains surrounding the city. Historians vary in opinion whether they were intended as shelters or secret weapons factory.

According to local lore, the Nazis hid a train with gold in a secret tunnel nearby while fleeing the Red Army in 1945, at the end of the war. The area was in Germany at the time but became part of Poland after the war.