An in-depth knowledge of the three-dimensional geological environment is an important factor in the conservation of rock art in caves because of the beneficial or harmful effects of thermal cycling, water transport, natural or induced tremors, air currents, as well as the presence of visitors. The intermittent or continuous measurement of these parameters, which may be disruptive, necessitates the setting up of specific indirect methods such as microgravimetric, seismic, or electrical prospection and infrared remote sensing. The application of these methods is always difficult in places where access may be limited.