Grain silos are tall, cylindrical structures used for storing bulk grains like wheat, corn, and barley. They help protect the grains from pests, moisture, and spoilage, ensuring that the food supply remains safe and stable. Silos can be made from various materials, including steel and concrete, and are often found on farms or near processing facilities. These structures are essential in the agricultural industry, allowing farmers to store their harvest until they are ready to sell or process it. By maintaining the quality of the grains, grain silos play a crucial role in the overall food supply chain and economy.