This work by National Geographic photographer John Stanmeyer captures the harvest scene of an Iowa corn farm at dusk. In the image, a green John Deere tractor pulls harvesting equipment, unloading golden corn kernels into a red trailer, with the sunset's glow casting over the vast fields, showcasing modern agricultural mechanization. As a core area of the U.S. 'Corn Belt,' Iowa's corn production accounts for a significant portion of the nation's total, and this scene reflects farmers' hard work at sunset, combining the tranquility of the countryside with the joy of harvest, serving as a vivid portrayal of rural agricultural life.