Attention to human-environment relationships in the central Andes has a long history. Although the area is not a neat microcosm of the globe, wholly representative of worldwide trends in the archaeology of human-environment interactions, it has been the site of both seminal investigations in archaeology and a substantial body of recent work that investigates themes of broad archaeological relevance. Specifically, central Andean environments have been variously conceived as structuring, modified, and sacred. These approaches to some extent reflect broad trends in archaeology, while also suggesting directions in which the archaeology of human-environment interactions is moving and highlighting archaeology's relevance to discussions of contemporary human-environment interactions. This article characterizes concepts that are key for describing central Andean environments and considers the ways in which the particular ecology of the central Andes has informed archaeological research in the region. The example of the central Andes highlights the importance of understanding environments as dynamic, considering both geomorphic and anthropogenic contributors to that dynamism, and examining both ecological (''environment'') and ideological (''landscape'') implications of archaeological landscapes.