In this immense nature that we have been gifted, there is a place that has taken on a unique role for humans: the cave. Its natural architecture is conducive to both the idea of refuge and of wonder and adventure, still kept alive by the most famous tales. In our imaginations, the lair or den goes beyond the simple role of architectural space. Since time immemorial, it has been the source of great symbolism for humans, who place it at the centre of everything. As such, is a cave a vernacular place or a sacred one? What special bonds do we have with caves?