The submitted project has two main objectives, which are: 1) Analysis of the influence of wildfires and high temperatures on the changes in physical and mechanical characteristics of rocks (strength, porosity, permeability, etc.) and thus the stability of rock masses. The analysis will be carried out on different rocks (sandstones, limestones, crystalline rocks). 2) Analysis of the future evolution of rock masses and their stability affected by short- and long-term exogenous (temperature) influences related to ongoing climate change.