Ecofiction is an elastic term, which emerged soon after ecology took hold as a popular scientific paradigm and a broad cultural attitude in the 1960s and 1970s. It accommodates a variety of fictional works that address the relationship between natural settings and the human communities that dwell within them. Contemporary ecofiction is divided into three broad categories, such as wilderness narratives, stewardship narratives that weave together the linked fates of human communities and the land; and postnatural narratives that reject both wilderness and the land as dominant tropes or structural frameworks. Edward Abbey's fiction offers an extended gloss on Thoreau's dictum from his essay Walking. The allure of the wild, a direct legacy of the Romantic tradition, is a frequent theme in American environmental fiction. For Silko, language and narrative traditions act as repositories of information and as instruments of ritual ceremony that form the basis of communal identity.