Sort of.... Not quite like what you are describing, but similar in its own way.
A number of years back we explored a couple of mine claims that were for sale. One of them was quite interesting and we ended up buying that claim.
Since that time we have done a lot of work to shore up some of the areas that were in danger of collapse. We've also started digging out the lowest level that has had a lot of dirt and debris flow in with local flooding. We are talking 5 feet deep and a few hundred square feet. Lots of earth to pull up from 100' underground.
It's been a lot of work, but I really enjoy the solitude and being underground. Abby Normal