CountryBoy19
Grandmaster
Just linking the first video, there are several but these guys undertook an impressive project...
https://www.youtube.com/watch?v=8C8Odrqo7NQ
https://www.youtube.com/watch?v=8C8Odrqo7NQ
Not much different than any one of a few hundred cave digs I've been on ;-)
Wow, that's some serious dedication!!!I want to see your new place!
We put an entrance in to a cave a few years ago that involved digging 43' through solid rock straight down then we built a bunker over the entrance, backfilled around it and now the only evidence on the surface is the hatch gate. We had a crane system we used to haul buckets of gravel up. It took us two years of working every other weekend, I'll show you pics and vids we took sometime.