This is an image of a thresher, a machine used in farming. A threshing machine separates grains from stalks and husks, or—as the saying goes—separates the wheat from the chaff.
This particular thresher dates from the early twentieth century and is sitting in the yard of the Eastern Sierra Museum in Independence, California in Owens Valley.
I created the image by blending four exposures to make an HDR composite.
Exposure data: 22mm, four exposures at shutter speeds from 1/2000 of a second to 1/80 of a second, each exposure at f/11 and ISO 200, tripod mounted, exposures combined using Nik HDR Efex Pro and hand layering in Photoshop.