In the season finale, the team finally reaches the void space under the waterfall, giving them a glimpse of what lies inside. But excitement is short lived when unexpected visitors get in the way. Meanwhile, the team investigates leads for other possible Yamashita treasure sites throughout the Philippines, uncovering evidence that any one of their 25 new treasure maps could lead them to the Lost Gold of WWII.

The episode was rated 8.01 from 104 votes.

Breach 6 reveals its first piece of treasure; Levi and Geo come up with a creative solution to get past a mysterious collapse in the tunnel; while drilling toward a possible treasure vault, John and Rob make a startling discovery.

The episode was rated 7.98 from 104 votes.

With new evidence suggesting the location of a possible treasure vault beneath the waterfall, John is determined to find a way in, but Mother Nature is wreaking havoc on his plans; information is revealed about the knife that was found.

The episode was rated 7.82 from 100 votes.

Peter meets with a man who warns of the deathly risks in searching for Yamashita's treasure; the team clears the last obstacles and finds a secret tunnel directly into the mountain.

The episode was rated 7.81 from 113 votes.

Another promising clue at Breach 6 leads Rick to believe they're on the right track. John hits a roadblock on his search for a tunnel entrance near the waterfall, Bingo makes an incredible discovery that could lead him to Golden Lily treasure maps.

The episode was rated 7.75 from 105 votes.

When a dead end in the tunnel threatens to close the door on exploration, a back door opens. Using their recently decoded Golden Lily map, the team discovers new access points, hoping to get under the waterfall by any means necessary.

The episode was rated 7.73 from 93 votes.

John plans to drill across the mountain; Rick finds an artifact at Breach 6 that could confirm Japanese military presence; Levi and Geo make a grim discovery in the tunnel; Bingo meets someone with rare and valuable knowledge.

The episode was rated 7.71 from 97 votes.

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.

The episode was rated 7.71 from 124 votes.

After discovering a bomb marker, the team brings in an explosives expert to search a cave that may have been a headquarters of General Yamashita during the war. Inside, they uncover a potential booby trap, along with their first hint of treasure.

The episode was rated 7.65 from 130 votes.

As the team finally gets to the bottom of Breach 6, startling new evidence suggests they might be too late; the miners trigger a hazard in the tunnel, which threatens their safety; Bingo unearths alarming evidence a little too close to home.

The episode was rated 7.62 from 102 votes.