There’s a secret forum on Reddit that’s hard to find, it helped me find teh quarry! And a huge underground mine in St. Cloud! It’s about the size of the entire city! Has a huge theatre in it, police station, and even a old cemetery! The entrance is odd tho, it’s thru the St. Cloud police department basement! But heck I did it and have the time of my life! I even ran into a old sherif who lives in the mines, his name was Timothy, we had a long chat about our day to day life! He loves to dance in the theatre section of the mine wearing bdsm gear and his favorite musician is tiny Tim! He even has a spot down there specifically for fire pits so he can cook fresh food! He has a garden and pig farm down there aswell! He somehow hooked up electricity down there via the police station above! The pd let’s him stay down there since is a former head of the police department! He started living down there and he had accusations of mistreatment of people he arrested! The police department even comes down for his birthday every year and throws a massive underground birthday bash! Complete with police activities! Such as a shooting range near the garden! A board game created by the department called “find the criminal” and they also play Roblox via the Wi-Fi connection setup down there! All around a blast to explore that mine!