A miner is explaining the properties of the rocks to a visitor during a tour of the Bergtatt mine in Eide, Norway, on January 30, 2024. Bergtatt is an impressive marble mine situated in the county of More og Romsdal, near the town of Eide, in the western region of Norway. It is offering guided tours through its subterranean caves. The experience includes a boat ride on an illuminated subterranean lake and a concert hall carved into the marble. (Photo by Jorge Mantilla/NurPhoto) (Photo by Jorge Mantilla / NurPhoto / NurPhoto via AFP)