Housed in a hôtel particulier – a historical, former private residence, the Musée de la Chasse et de la Nature is dedicated to hunting and nature. Tick off taxidermy animals, including a polar bear, antler horns and paintings of hunting scenes. To attract a wider audience, the museum began organising temporary, contemporary art exhibitions a few years ago. 'Unleashed: Roger Ballen and Hans Lemmen' is the latest.

One is an American-born, South African-based photographer whose haunting images of marginalised individuals has made him an art world star. The other is a Dutch artist known for his drawings and sculptures portraying nature. Ballen and Lemmen met six years ago at Ballen's exhibition at the Museum Het Domein in Sittard in the Netherlands. The two hit it off and met up to wander around Flemish flea markets. As their awareness of a mutual artistic sensibility deepened, the idea to collaborate gradually came about. For Lemmen, this was the first time he delved into a collaboration, whereas Ballen had already worked with South African music group Die Antwoord on their video 'I Fink U Freeky'.

Roger Ballen/Hans Lemmen, Grasp, 2016, Photographie, 55x55, © Roger Ballen et Hans Lemmen Collection privée
For both Ballen and Lemmen, the experimental process was evolutive and risky. Ballen would send his photographs over to the Netherlands, where Lemmen would set about over-layering parts of them with fragments of his drawings. Equally, Ballen would receive Lemmen's drawings and figure out how he could construct something by inserting the drawings into his photographs. The resulting collages are testament to the willingness of each to forgo total authorship, enter into a duality and open the avenue for the unexpected.

The collages of human beings and animals are perturbing and theatrical, Lemmen's drawings appearing like props or sculptures at times that are interacting with Ballen's images. The otherworldly quality of Ballen's work is thus enhanced, while Lemmen's drawings are grafted into a photographic space hovering between reality, the imaginary and the staged. Psychologically charged, the works speak out about the darker recesses of the mind, interrogating the notions of real/unreal, sanity/insanity.

Hans Lemmen/Roger Ballen, Rendez-vous, 2016, Dessin sur photographie, 45,5 x 46, © Roger Ballen et Hans Lemmen Collection privée
Roger Ballen/Hans Lemmen, Dog Meets Dog, 2016, Photographie, 55x55, © Roger Ballen et Hans Lemmen Collection privée
Roger Ballen/Hans Lemmen, Oh No!, 2016, Photographie, 55x55, © Roger Ballen et Hans Lemmen Collection privée
Roger Ballen/Hans Lemmen, Rip, 2016, Photographie, 55x55, © Roger Ballen et Hans Lemmen Collection privée
Roger Ballen/Hans Lemmen, Entanglement, 2016, Photographie, 37x37, © Roger Ballen et Hans Lemmen Collection privée