The activity "II Hybrid Nature Workshop.The ecological limits of the urban", organised by the ConCiencia Social Innovation Group and aimed at students in the fourth year of the Degree in Sociology, was focused on practice of forms of active learning that allow complex problems to be tackled outside the classroom, such as waste management, pollution and repercussions for nature that arise from the way of life in the cities.The activity consisted of visiting strategic places located in rural areas that serve the urban environment, exploring their use, limits and function collectively, creating a collaborative space in which to co-produce reflections, experiences, interpretations and knowledge about the ecological limits of the urban, while paying special attention to the social construction of these spaces and the role of the academic world in its critical questioning.This reflection overcomes the classic division between the urban and the natural as separate domains, placing us before hybrid entities that challenge the divisions of expert knowledge between applied disciplines.