Collective effervescence is assigned a key role in sociological theorizing on ritual and group processes, yet surprisingly little research has systematically measured the phenomenon and examined its sources. In addressing this research gap, the current article explores and compares several correlates of collective effervescence. The data included questionnaires and geospatial records of spatial setting and movement patterns recorded at a large music festival. Multilevel regression modeling was applied, and the strength of the estimated evidence was assessed with frequentist and Bayesian approaches. Results suggest that collective effervescence is a highly spatially clustered phenomenon that, in particular, is associated with the social-morphological feature of being in a crowd of people. The article discusses the implications of these results for sociological Durkheim scholarship as well as for festival-event studies.