In this analysis of elements which break the continuity of natural spaces (gullies, forests, rivers, hills) or constructed spaces (bridges, paths, crossroads, borders, milestones) we see that they are primarily considered as crossover places between different worlds. Places where spirits and ‘experts in exstasy’ circulate. Among these are the Calusari, esoteric groups whose practices recall those of shamanism. The analysis of their rituals reveals the importance for traditional societies of the notion of ‘limits’.