In this paper we argue that cartography is profitably conceived as a processual, rather than representational, science. Building on recent analysis concerning the philosophical underpinnings of cartography we question the ontological security of maps, contending that it is productive to rethink cartography as ontogenetic in nature; that is maps emerge through practices and have no secure ontological status. Drawing on the concepts of transduction and technicity we contend that maps are of-themoment, brought into being through practices (embodied, social, technical); that mapping is a process of constant re-territorialization. Maps are never fully formed and their work is never complete. Maps are transitory and fleeting, being contin...