In this article, on behalf of The Shadow Places Network, we outline a working manifesto of politics and practice. We mobilise the format of the manifesto to speak to an uncertain and damaged future, to begin to imagine other possible worlds. For feminist philosopher Val Plumwood, whose thinking inspires this network, shadow places are the underside of the capitalist fantasy, ‘the multiple disregarded places of economic and ecological support’. In turning towards shadow places, and the unjust and unsustainable processes that produce them, we call for an environmental humanities that reaches beyond abstraction, fosters new responsibilities, considers the uncomfortable, and generates reparative possibilities and alternative futures. We aim to continue to trace out a world of shadow places. We acknowledge that these shadow places cannot be known in full, but through a willingness to engage in careful conversation with the beings and places harmed by (or strategically shielded from) processes of the Anthropocene, we can learn how to relate to each other and these places in more just ways. Recognising that shadow places are impermanent and contingent, this working manifesto does not look to predetermine or prescribe but rather invites conversation, encounter and exchange. In so doing we choose to contribute to making different worlds possible by pursuing new collaborations, new methods and new politics.