Out of curiosity, what were you digging with? Unless you were digging with a toy sand shovel or making a very large hole, that seems like a very long time.

As a kid, my cousin, my sister, and myself were able to dig a hole deep enough for me to be completely inside in an hour or two using a post hole digger. (Yes, this is a very stupid idea.)

You have to make sure it's straight, drop sheathing in to the hole, and then cap it if it isn't going to be used right away.

More importantly, geothermal/ground source is rarely 1 well either, in our case it was 8.

A shovel. I couldn't get past 1m because of the rocks were too difficult to shatter.

That’s fair. We were not digging through rocks.

That’s what they mean. My neighbor had one drilled and the contractors showed up with a huge well-drilling truck.

It’s just a huge vertical drill with segments you add on as it goes deeper, like an oil well drill.

Correct, it's big but I wouldn't say huge (maybe 4.5x2.5m). This is the machine they used: https://conrad-stanen.nl/nl/producten/boxer-200

Most drills I’ve used fit in your hand. Compared to that, it’s huge :)

(although on rereading I didn’t mean to say ‘huge’ twice in my previous post)