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The transmission of ancestral knowledge inside the mapuche-lavkenche indigenous community is a cultural practice that is relevant for its implications in tsunami risk reduction. Through the realization of semi-structured interviews and the subsequent use of the Grounded Theory with the help of Atlas.ti tool, it has been possible to confirm that the transmission of that knowledge through stories and direct experiences happens inside the families, communities and schools, which represents an effective way of risk communication and the most relevant source of risk education. Added to the knowledge transversity, the risk perception and the strong social bonds, they are some typical characteristics of a resilient society with fast emergency responses and a constant learning.

This paper aims to make a quantitative, theoretical and conceptual approximation to the situation of public spaces in Gran Santiago (Chile). In the first part, the urban public space is defined as a platform for meeting and social interaction. This is especially necessary in a historically segregated city, which has resulted in social fragmentation. Second, the different types of public spaces existing in Gran Santiago are characterized, understanding them in direct relation to the different scales and territorial hierarchies that have place in a diffuse metropolitan city.