> Put your camera to look into correct wall of box. Or reorient box to show
hole.

Below I have copied the updated scene I am using.
Now what appears to be happening is that the differnce is creating a
"tunnel" into the first cube, with the "end of the tunnel" being the same
color as the second cube. This is odd because I thought all objects were
hollow. I expected to see a rectangular hole punched into the first cube,
and being able to look inside of the first cube.



#include "textures.inc"
#include "colors.inc"

// ----------------------------------------
// ############ BEGIN #####################
// ----------------------------------------

camera {
//  location  <-6, 12, -50.05>
//  look_at   <-6, 12, -25.05>

//location <5,3,-11.05>
//look_at <5,3,-8.05>
location <5,3,-15.05>
look_at <5,3,-11.05>

  #if (frame_number < 361)
    rotate <0,360*clock,0>
  #end
}

light_source {
    <-6, 30, -60.05>
    color rgb <1, 1, 1>  // light's color
}

light_source {
    <5,3,-5.05>
    color rgb <1, 1, 1>  // light's color
}


// ----------------------------------------


// house cube
difference {
    box {
        <-10, -1, -10>,  // Near lower left corner
        <10,15,10>       // Far upper right corner

        texture {
            //MJHouse
            Red_Marble
            scale  .25
            rotate y*90
        }
    }

            // this is only done for the difference of the house cube
        // front door
        box { <4,-1.01,-10.01>, <7, 4, -9> texture { White_Marble } }


} //end of difference for the house cube

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