// typical sun light ----------------------
light_source{<1500,2500,-2500> color White}

// just a sphere to demonstrate the shadow casting
sphere { <0,0,0>, 0.5 
         texture { pigment{ color Flesh}
                   finish { phong 1}
                 } // end of texture
          scale<1,1,1>  rotate<0,0,0>  translate<0,0.75,0>  
       }  // end of sphere ----------------------------------- 

