Another image in the "diverse terrain of eastern Washington" series. A scanned medium format negative. The Palouse is a region of the northwestern United States and a major wheat-producing agricultural area. The peculiar and picturesque silt dunes which characterize the Palouse Prairie were formed during the ice ages. Blown in from the glacial outwash plains to the west and south, the Palouse hills consist of more or less random humps and hollows. The steepest slopes, which may reach 50% slope, face the northeast. Large areas of level land are rare.