Remnants of Circular Irrigation
Tuesday, February 6th, 2007
Above Nebraska. Three circular fields showing through a snow cover which makes them look like pre-historic markings on the earth brought out by a "snow rubbing." Circular or center pivot irrigation is a way of using a robot radial arm to water or irrigate large fields. It requires perfectly flat fields so that the arm can travel unimpeded and because of that we can see why these fields are located where they are relative to the surrounding hills.
