plane {
   y, 0
   pigment { checker color rgb <1, 1, 1> color rgb <0, 0, 0> }
}

union {
   cone {
      <0, 0, 0>, 1
      <0, 4, 0>, 0
   }
   cone {
      <4, 0, 0>, 1
      <4, 3, 0>, 0
   }
   cone {
      <-4, 0, 0>, 1
      <-4, 3, 0>, 0
   }
   cone {
      <0, 0, 4>, 1
      <0, 3, 4>, 0
   }
   cone {
      <0, 0, -4>, 1
      <0, 3, -4>, 0
   }
   pigment { color rgb <1, 1, 0> }
}

light_source { <-100, 200, -500> color rgb <1, 1, 1> }

camera {
   location <2, 7, -2>
   look_at <0, 0, 0>
}