There needs to be a fine dining table restaurant inside a mineshaft. A bar and grill, based off this restaurant in Placerville California.
https://www.smithflathouse.com/

(Dinner In An Authentic 1800's Gold Mine Shaft - Smith's Flat Mine, Placerville, CA)
https://youtu.be/y34SbCgsFVE?si=ZftCfF1sPFhX8UnC&t=230

(Open for Biz: Smith Flat Pt 2)
https://www.youtube.com/watch?v=HBQTVCFPIg4

The Entrance will the this old Mine Train tunnel (Shown in the main picture).

Please keep signing, sharing and chipping in whatever you want for this idea to become a reality.