His films, which blur the boundaries between documentary and fiction, often take outsiders – people who have separated themselves from mainstream society – as their subjects. His work obliquely explores themes such as ‘wilderness’, or, as is the case in the film that is being shown in this exhibition, ‘freedom’. Using old technology, normally 16mm film shot on a Bolex camera and then developed at home, Rivers creates off-beat narratives that depict and imagine ways of life in marginal or overlooked worlds. Sometimes, when it is shown in art galleries, his work incorporates elements of installation.