“The lesson of old trees is: to rise”. Micro-phenomenological study of the role of the body in the constitution of an umwelt including the forest.

What are the modes of emergence and constitution of knowledge during an experience of nature? This text presents the micro-phenomenological study of an experimental training device that offers an experience of contact with a forest with the instruction “do not disturb”. The results show that this device promotes the development of a relational ontology through micro-dynamics of adaptation, integration, changes of perspective, etc., structured by movements in time and space and open to transformations in the participants.