This took a surprisingly long time to render: 58 minutes for the photon mapping
pass, 2 minutes for the first radiosity pass, and 23 hours for the final pass,
on an Intel i7 with 8 cores.  The first two passes were rendered at 1/4 scale
with no anti-aliasing, area light, blurred reflection, or camera DOF.

Blurred reflection is courtesy of module RC3Metal from the Object Collection.
CLipka's blurred reflection will surely be faster than mine, but at least mine
is available today.

Source code for the basic shape and an explanation of the geometry are posted to
povray.binaries.scene-files.

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