Realistically they only spent a small fraction of the day digging
if they only had to dig one hole a day. Digging a 5X5 foot hole really isn't that hard. I'm a very small female who NEVER works out and is not strong at all, and today I decided to dig in my backyard looking for artifacts. I didn't intend to dig as far as I did, but when I was finished, in about 1.5 - 2 hours, I had dug a hole about 3 feet deep and 3 feet wide. Not only that but because I was looking for artifacts as well as digging in incredibly rocky soil, I was stopping frequently. Surely it would have taken me only about an hour to an hour and a half more to get to 5 feet by 5 feet, but I had to call it quits because my mom was getting home soon and I wasn't supposed to be digging.
thepetitionsite.com/503/089/300/make-a-documentary-about-murdered-child-star-judith-barsi/