The team attempts to prove if a tunnel exists behind a unique formation of rocks they believe is a secret backdoor entrance into the mountain. Battling a typhoon and possible Nazi concrete, the team ultimately finds proof of a void 40-feet below. See more in Season 1, Episode 6, "Nazi Concrete."

#LostGoldofWWII

Subscribe for more from Lost Gold of World War II and other great The HISTORY Channel shows:
http://histv.co/SubscribeHistoryYT

Find out more about the show and watch full episodes on our site:
https://www.history.com/shows/lost-gold-of-world-war-ii

Check out exclusive The HISTORY Channel content:
History Newsletter - https://histv.co/newsletter
Website - https://histv.co/History
Facebook - https://histv.co/Facebook
Twitter - https://histv.co/Twitter

It is the last great mystery of WWII. In the closing months of the war, legend has it that the Japanese buried something of immense value deep in the Philippine jungle. One Philippine farmer witnessed the operation. He has entrusted his secrets to a group of dedicated investigators and engineers who are using the latest technology to search for the treasure and the truth.

The HISTORY® Channel, a division of A+E Networks, is the premier destination for historical storytelling. From best-in-class documentary events, to a signature slate of industry leading nonfiction series and premium fact-based scripted programming, The HISTORY® Channel serves as the most trustworthy source of informational entertainment in media. The HISTORY® channel has been named the #1 U.S. TV network in buzz for seven consecutive years by YouGov BrandIndex, and a top favorite TV network by Beta Research Corporation. For a deeper dive, visit history.com or follow @history on Instagram, Twitter, Facebook, YouTube and TikTok. For additional press materials visit the A+E Networks Press Center at http://press.aenetworks.com