This is a view of the Great Salt Lake and nearby Bonneville Salt Flats, UT, (41.0N, 112.5W). A railroad causeway divides the lake with a stark straight line changing the water level and chemistry of the lake as a result. Fresh water runoff enters from the south adding to the depth and reducing the salinity. The north half receives little fresh water and is more saline and shallow. The Bonneville Salt Flats is the lake bed of a onetime larger lake. This picture is one of several lake images that can be found at the NASA Johnson Space Center Web Site: http://images.jsc.nasa.gov/iams/html/pao/searchpao.htm