//light emitting media
#include "colors.inc"
#include "textures.inc"   

camera {
   location < 0,30,-30>
   look_at  < 0,30, 0>}

light_source { < 50,50,30> color rgb <2,2,2>
fade_distance 100 fade_power 1.5 
  }   
 
box {<-100,0,-100><100,200,2000> hollow pigment {Brown}
 interior{ media {emission .001 
            //    absorption 0.002
}}}