All the following are features produced by wind erosion except

Wind erosion is a natural process that occurs when wind removes particles from the earth's surface. The movement of wind can cause various landforms to form, such as rock pedestals, zeugens, yardangs, and other features. However, rift valleys are not a feature produced by wind erosion. Rift valleys are formed by the movement of tectonic plates and are commonly found at divergent plate boundaries, where the earth's crust is being pulled apart. The separation of the plates causes the formation of a rift valley, which can create a low-lying area between two highland areas. On the other hand, rock pedestals are created by the selective erosion of softer rock layers, while zeugens are formed by the differential erosion of alternating layers of hard and soft rock. Yardangs, meanwhile, are elongated ridges formed by the wind eroding the softer rock layers around them, leaving the harder rock layers behind. In summary, all the given options except rift valleys are features produced by wind erosion.