A grain silo is a structure created to store materials in bulk. They are usually tall and cylindrical, but can also be constructed in the form of warehouses, domes, or large
elongated bags. They primarily hold grain, seed, or silage, fodder that is harvested green and then stored and left to ferment. This fodder is then used to feed livestock or as a biofuel, and is usually grass, alfalfa,sorghum, oats, or maize.
