Air currents flow in and out over the Earth. The subterranean landscape shelters Italian and Cuban explorers from invasions and disasters. Survival in the inner atmosphere teaches us to reduce the human activity from the surface. In the caves, life is slow. This is a fascinating exploration of the conditions for grasping the material and subterranean dimensions of the historical process. The caves are presented as ubiquitous phenomena and meteorological questions. “Does it breathe?” Between scientific inquiry and speculative rigour, the invention of a regime of visibility.