A film made in collaboration with sound artist Maile Colbert that is centred on the production of landscape and concrete in the Arrábida Natural Park, Portugal. Covering a vast area of coast, caves, mountains and forest, the park is inhabited by a massive concrete factory that branches through the landscape. Documenting the various layers of the sourced material, the factory body and the constructed landscape, the film looks at how time is physically embedded in the matter and how the molecular particles act in a circular re-shaping of the whole. The film merges 16mm footage shot in the area of Arrábida with 3D animation of the topographic landscape as an equal analogue layer.

Urth takes its title from the Old Norse word suggesting the twisted threads of fate (as cited by Timothy Morton in his recent book, Dark Ecology) and has utopias — in particular the tension between a yearning for an idealized world and the impossibility of such a place as its subject. Filmed inside Biosphere 2 in Arizona, it forms a cinematic meditation on ambitious experiments, constructed environments, and visions of the future. Writer Mark von Schlegell contributes a text - read as voiceover to Rivers’s moving images - that considers what an endeavor such as Biosphere 2 might mean today in terms of humankind’s relationship with the natural world.

Heliopolis Heliopolis was the name of a metropolitan simulacrum devised as a training tool for urban planning at the NoUn School of Architecture in Egypt in the 3rd century BC. It was created by an insurgent priest (whose name has been lost) as a tool to train students in the design of a revolutionary city meant to surpass the ancient city of Heliopolis. This in spite of the fact that the priest and his students appear never to have visited Heliopolis and based their model exclusively on texts and secondhand knowledge. Eventually this became a source of pride within the school and descriptions of Heliopolis gained a fantastical nature, becoming both meticulously elaborate and wildly implausible. Heliopolis Heliopolis is a cinematic interpretation of the simulacrum and the hypnotic, trance-inducing ritual connected to its use.