Found this via a post here by the late Jim Henry ( https://www.part15.org/community/temp/new-program-life-underground/)
I'm listening to an episode now and think it's outstanding! Unfortunately it looks like he only did five episodes between 2017 and 2022... they were quite sporadically released so maybe more will appear in the future I kind of hope so, I've only heard the first one do far but it sounds well done and its interesting. Even if no more are produced, what there is could make a nice mini-series of a program!
Check it out;
LIFE UNDERGROUND
https://life-underground.blubrry.net/category/episodes/
"Life Underground is a podcast series that profiles stories of cultural history based upon reflections of old relics that the narrator finds while searching with a metal detector. Through researching long lost objects from the past, their purpose and importance to those who possessed them is revealed and relative values are equated to our life today, providing us with insight into their meaning."