Pastoral systems, which are necessarily extensive, are traditionally characterised by low density of population. This forces shepherds to live in a scattered pattern of settlement (absence of urban areas) and to move around regularly. However, in these pastoral spaces, noticeable phenomena of concentration and grouping are occurring. The Peruvian Andean puna is no exception, and starting about twenty years ago, access to basic modern services and their provision has become available through the appearance of cores of population and weekly communal gatherings which transform mobility patterns and require pastoralists’ settlement far from the home pastures. As a consequence, within these pastoral systems, in which itinerancy and housing dispersion constitute the basis of socio-spatial living, the issue arises of reconciling the tendency toward clustering with the practices of cattle breeding. These new forms of mobility and immobility transform the shepherds’ territoriality. The cohesion of district and community is strengthened by this phenomenon, to the detriment of the traditional organization based on the agnatic line.