Kummer's surface 2

In this view, Kummer's surface is shown as the set of points (x,y,z) satisfying the equation

x^4 + y^4 + z^4 - y^2z^2 - z^2x^2 - x^2y^2 - x^2 - y^2 - z^2 + 1 = 0

The picture was produced by ray-tracing, a technique based on following the paths of light rays through the scene.

Another picture and more information about the surface are available.