RSS
Output RSS 2.0
"The chart legend lists various aeronautical symbols as well as information concerning terrain and contour elevations. You may identify aeronautical, topographical, and obstruction symbols (such as radio and television towers) by referring to the legend. Many landmarks which can be easily recognized from the air, such as stadiums, pumping stations, refineries, etc., are identified by brief descriptions adjacent to small black squares marking their exact locations. Oil wells are shown by small open circles . Water, oil and gas tanks are shown by small black circles and labeled accordingly, if known. The scale of an item may be increased to make it easier to read on the chart."