Indigenous territorial claims are a long-standing concern in the history of Latin America. Land and nature have profound meaning in indigenous thinking, which is neither totally understood nor legitimized by the rest of society. This article is aimed at shedding light on this matter by examining the meanings at stake in the territorial claims of the Mapuche people. The Mapuche are an indigenous group in Chile, who are striving to recover their ancestral land. This analysis will be based on the concept of Umwelt, coined by von Uexkull to refer to the way in which species interpret their world in connection with the meaning-making process. Considering the applications of Umwelt to the human being, the significance assigned to land and nature by the Mapuche people emerges as a system of meaning that persists over time and promotes interdependence between people and the environment. On the other hand, the territorial claim of the Mapuche movement challenges the fragmentation between individuals and their space, echoing proposals from human geography that emphasize the role of people in the constitution of places.