Landslides in such environments can be triggered by various factors including geological instability, water infiltration, and the natural settling and shifting of the earth. The management of the Wieliczka Salt Mine likely conducted thorough geological assessments that indicated potential hazards, prompting these closures.

These closures may affect certain tours and access to specific areas within the mine, but efforts are typically made to ensure that visitors can still experience the most significant and secure parts of the mine. The preservation of this UNESCO World Heritage site is of utmost importance, and ensuring safety is a critical aspect of its ongoing maintenance.
That's intriguing! Viewing a movie that features the closed parts of the Wieliczka Salt Mine would provide a rare glimpse into areas that are currently inaccessible to the public due to safety concerns. These visual insights can highlight the mine's beauty, historical significance, and the ongoing efforts to preserve it.

To enhance the experience of watching such a movie, here are a few aspects to look out for:
1.     Historical Significance: The movie might delve into the mine's rich history, showcasing its development over centuries and its role in the local economy and culture.

2.     Architectural Marvels: Pay attention to the intricate salt sculptures, chapels, and underground lakes, which are among the most celebrated features of the mine.

3.     Engineering and Preservation Efforts: The film may highlight the engineering techniques used to construct and maintain the mine, as well as the modern preservation efforts to address the risks of landslides and other geological hazards.