This work offers a detailed case study on the dynamics of forest use, degradation, and loss in Northeast Luzon, Philippines. Following an interdisciplinary approach, the study charts the degradation and loss of forest in this area between 1950 and 1990, as it relates to the social and political context of logging, forest migration, and changes in upland agriculture. Based on ten years of research, the author introduces us to the actions, livelihood options, and motives of all the principal group of actors.