The Udzungwa Mountains and Forests of Tanzania provide rain and climatic conditions favourable for agriculture and the life of local populations. The Eastern Arc Mountains are home to a vast variety of endemic animal and plant species and conserve a pristine natural environment that has remained unchanged for millions of years. Within its research program, the Museo Tridentino di Scienze Naturali (Museum of Natural History, Trento) is engaged in a cooperation project with local communities for forest preservation. The film illustrates the history of this project.