Welcome to the world of CRAG, the Cold Regions Applied Geophysics research group from the University of Lausanne. At CRAG, we focus on developing and applying state-of-the-art geophysical techniques to investigate the complex structures and dynamics of cold regions, particularly those in the alpine environment. For the moment, our main area of expertise is in the use of Ground-Penetrating Radar (GPR), a non-invasive geophysical technique that allows us to probe the subsurface of the Earth.