Map of California- Central Valley

aerial shot of plowed fields - tractor tills field - animated map illustrating central valley - tractor harvests potatoes - potatoes run up conveyer belt and onto a mountain of potatoes - life cycle of a cotton bulb - harvesting of cotton - bales of cotton - barley harvested by a combine - alfalfa harvest - irrigation water flowing out of pump - friant dam and canals - raisin harvest - boxes of raisins roll down conveyer - worker hand picks grapes off the vine - aerial shot of San Joaquin river and levees - man sticks long knife into ground to cut asparagus, unusual farming shot - tomato farming and harvest - tomatoes being separated from vines on vibrating tray - farmer harvests walnuts from tree using a tractor with a telescoping arm that shakes trunk until walnuts fall to ground, interesting shot - almonds harvested similarly to walnuts.