Chott el-Djerid (A Portrait in Light and Heat) almost magically captures the optical and acoustic distortions of nature. Focused on landscape, the video work dwells briefly on the snowy plains of midwestern America and Saskatchewan, then abruptly switches to the arid Tunisian desert. Viola investigates the world of illusion and how it is made. He works by slowly discovering the distinctive character of a place, probing its power and energy, drawing upon the associations it evokes, and searching instinctively for its archetypal symbols. In Tunisia, he was fascinated by the pastel-colored desert mirages floating mysteriously near the horizon.