How to Dig a Hole Of Mice and Men David Rees learns about animal holes with Professor Hopi Hoekstra and her assistant, Nicole Bedford. Researchers like them can even identify what genes control size and shape of the old field mice's burrows because they've studied the animal so thoroughly. Tunnel Vision David Rees holds a mold of an old field mouse's tunnel. These mice instinctively build incredible holes that can even have hidden escape routes, and Dr. Hoekstra makes foam molds of the holes to study their structure. Buried Treasure David Rees hangs out with Matt Schreiner in a giant experimental mine hole in Colorado. Luckily, neither of them have trypophobia, which is the fear of holes! Hole in One David Rees talks with the course superintendent at Rockland County Country Club, Matt Ceplo, about digging a golf hole. The land's loamy soil makes digging a lot easier there. Birdie? David Rees points his finger in the air while smiling. The Stoic Subject David Rees stands with experiment gadgets attached to his body parts. All of this is to find out which is the best shovel for him with Dr. Shovel leading the experiment. Back to the Sandbox David Rees checking out shovels in a sand box. The Test Subject David Rees discusses a shovel experiment with Dr. Shovel. They measured the workload, which is the pounds of dirt David was able to move with each shovel compared to his physical exertion, oxygen, and heart-rate. Not Chalk This Time Vincent Minelli teaches David Rees about marking the outline before digging a grave, which actually only have to be three feet deep in New York City despite the saying "six feet deep." The Graveyard Shift David Rees hangs out with Chuck Weickum at a grave. They are at Woodlawn Cemetary, the resting place of many notable people including Miles Davis, Duke Ellington, and Joseph Pulitzer.