Kosek traces the histories of forest extraction and labor exploitation in northern New Mexico, where Hispano residents have forged passionate attachments to place. He describes how their sentiments of dispossession emerged through land tenure systems and federal management programs that remade forest landscapes as exclusionary sites of national and racial purity. Fusing fine-grained ethnography with insights gleaned from cultural studies and science studies, Kosek shows how the nationally beloved Smokey the Bear became a symbol of white racist colonialism for many Hispanos in the region, while Los Alamos National Laboratory, at once revered and reviled, remade regional ecologies and economies. Understories offers an innovative vision of environmental politics, one that challenges scholars as well as activists to radically rework their understandings of relations between nature, justice, and identity.