This guy is a combo heavy equipment operator, engineer, and archeologist. Not formally educated in all, but what an interesting job!
https://www.theatlantic.com/science/archive/2017/08/backhoe-archaeology/535827/
I find people like this fascinating… cool story! B-)
He reminds me of a guy I know who invents and runs a very successful business. I believe he’s late 60s, early 70s but still very active and able to think outside the box well.