AP Soldiers stand next to a van near railway tracks between Walbrzych and Wroclaw as they prepare to search the site of a rumored Nazi ghost train.
Earlier this month crews began clearing trees and shrubs alongside a railway in southwestern Poland that stretches between the towns Wroclaw to Walbrzych.
"Our goal is to check whether there's any hazardous material at the site," Colonel Artur Talik, who is leading the search using ground-penetrating radar, reportedly told Agence France Presse.

Reuters
Colonel Artur Talik of 2 Regiment of Military Engineering with Lower Silesia voivodeship authorities speaks with others as they inspect a site (65 km of railway between Wroclaw and Walbrzych) in an area where a Nazi train is believed to be at, in Walbrzych, southwestern Poland September 4, 2015.

Screen grab/TVP
Peter Koper and Andreas Richter
"We have irrefutable proof of its existence," he added.
According to Koper, he and Richter found the train by using their "own resources, eyewitness testimony, and our own equipment and skills," the AP notes.
Along with their statement, the men released an image taken with ground-penetrating radar that purportedly showed the armored Nazi train.
Here's the first radar image:

Screen grab/Amanda Macias/Business Insider
A graphic taken with ground-penetrating radar that reportedly shows an unknown object inside a section of land.
The ground-penetrating image appears to show a row of tanks, which supports initial reports that the train was of "military nature."
According to local folklore, the German train is believed to have vanished in 1945 with stolen gold, gems, and weapons while fleeing the Russians.The only living source of the train legend, retired miner Tadeusz Slowikowski, confirmed to the Associated Press that Koper and Richter shared their findings with him before alerting authorities.
Slowikowski, who searched for the train in 2001, believes it is near the 65th kilometer of railway tracks from Wroclaw to Walbrzych.

Reuters
Tadeusz Slowikowski, a retired miner and explorer, shows documents near an area where a Nazi train is believed to be, in Walbrzych, southwestern Poland, September 4, 2015.
Polish
Meanwhile, investigators in Poland have suggested that the recently discovered train "could be the first of many," The Telegraph reports. Here's the route along which the train was found:

Google Maps/Amanda Macias/Business Insider
Despite Russia's preemptive claims to some of the cargo on the train, any items will be "returned to the heirs of their former owners," The Telegraph reports.