The banner Night Lake (position doubtful) was created as part of the Terrane Project, an Art on the Move residency at the Museum of the Goldfields in Kalgoorlie-Boulder/Karlkurla. The project brought together the archive, the woodlines, and the underlying mineral realm. The banner features a dark, inverted landscape from aerial photography.
Palaeovalleys are geologically ancient, buried river valleys. The extensive areas of salt lakes east and northwest of Kalgoorlie form parts of palaeodrainage systems. These wide valleys were active between the Late Cretaceous and Early Tertiary because of the warm, wet climate of the time. in the Eocene sediments largely filled in the valleys as the climate dried up about the time Australia split from Antarctica and moved northwards.
It has been more than 15 million years since they flowed as normal rivers do in wetter climates.