Which spiral jetty, my love?

Here is another confluence -- perhaps that is just the essence of art. On the one hand, I have always admired Spiral Jetty (1970) by Robert Smithson. Some may say that the work of art is in the process of mental inception -- say, dreaming of a spiral jetty, fleshing it out in some detail -- how wide, what size stones at the base, what color gravel on top, etc. Clearly Tarkovsky, one of my favorite directors, thinks so -- he sees shooting of the movie as nothing more than a chore. I should side with Tarkovsky, given my limited resources for executing works of art, but I am a person rooted in action, what took me from academia to consulting was to desire to see concrete results, ideas being implemented. Thus my admiration for Spiral Jetty.  I tried to incorporate materials I find around myself into my art. This piece of plexiglass was a scrap from a framing job. What I like about transparent medium is the ability to use both sides.