The Curse of Oak Island

Rick and Marty get tunnel vision

 

At the uplands, Billy continues excavating, recovering much wood from a searcher shaft. Further down, he recovers large pieces of axe-cut wood that are similar to wood used in the U-shaped structure. After Marty sees what appears to be a tunnel in the hole, a camera is lowered into the hole to get a better view of the structure. (Season 7, Episode 17)