CERN's underground areas are currently closed to the public, with no reopening expected for about ten years due to upgrades. Concerns were raised about the safety hazards present in the LHC tunnel, including electrical, cryogenic, oxygen deficiency, and radiation risks, making it unlikely that the tunnel has ever been open to general visitors. The conversation included light-hearted banter about potential hazards, such as black holes, and the importance of safety protocols in such a complex facility. There was also a discussion about the attention to detail required for the LHC's operations, emphasizing the seriousness of maintaining safety standards. Despite the closure, visitors can still enjoy the charm of the reception area and other public outreach activities at CERN.